Isaac Asimov (born Isaak Yudovich Ozimov, Russian: Исаак Юдович Озимов; Yiddish: אייזיק יודאָוויטש אסימאוו; c. January 2, 1920 – April 6, 1992) was an American author and professor of biochemistry at Boston University, best known for his works of science fiction and for his popular science books. Asimov was one of the most prolific writers of all time, having written or edited more than 500 books and over 9,000 letters and postcards. His works have been published in nine of the ten major categories of the Dewey Decimal System (The sole exception being the 100s: philosophy and psychology, although he did write a foreword for The Humanist Way, which is published in the 100s).

Isaac Asimov is widely considered a master of hard science fiction and, along with Robert A. Heinlein and Arthur C. Clarke, he was considered one of the "Big Three" science fiction writers during his lifetime. Asimov's most famous work is the Foundation Series; his other major series are the Galactic Empire series and the Robot series, both of which he later tied into the same fictional universe as the Foundation Series to create a unified "future history" for his stories much like those pioneered by Robert A. Heinlein and previously produced by Cordwainer Smith and Poul Anderson. He wrote many short stories, among them "Nightfall", which in 1964 was voted by the Science Fiction Writers of America the best short science fiction story of all time. Asimov wrote the Lucky Starr series of juvenile science - fiction novels using the pen name Paul French.

The prolific Asimov also wrote mysteries and fantasy, as well as much non-fiction. Most of his popular science books explain scientific concepts in a historical way, going as far back as possible to a time when the science in question was at its simplest stage. He often provides nationalities, birth dates, and death dates for the scientists he mentions, as well as etymologies and pronunciation guides for technical terms. Examples include his Guide to Science, the three volume set Understanding Physics, Asimov's Chronology of Science and Discovery, as well as numerous works on astronomy, mathematics, the Bible, William Shakespeare's works and chemistry subjects.

Asimov was a long time member and Vice President of Mensa International, albeit reluctantly; he described some members of that organization as "brain - proud and aggressive about their IQs." He took more joy in being president of the American Humanist Association. The asteroid 5020 Asimov, a crater on the planet Mars, the magazine Asimov's Science Fiction, a Brooklyn, New York, elementary school, and one Isaac Asimov literary award are named in his honor.

Asimov was born sometime between October 4, 1919 and January 2, 1920 in Petrovichi in the Russian Soviet Federative Socialist Republic (near the modern border with Belarus) to Anna Rachel Berman Asimov and Judah Asimov, a family of Jewish millers. His exact date of birth is uncertain because of differences between the Gregorian and Hebrew calendars and a lack of records. Asimov himself celebrated his birthday on January 2.

The family name derives from озимые (ozimiye), a Russian word for winter grains in which his great - grandfather dealt, to which a patronymic suffix was added. His name in Russian was originally Isaak Ozimov (Russian: Исаак Озимов); but he was later known in Russia as Ayzyek Azimov (Айзек Азимов), a Russian Cyrillic adaptation of the American English pronunciation. Asimov had two younger siblings; a sister, Marcia (born Manya, June 17, 1922), and a brother, Stanley (born July 25, 1929).

His family emigrated to the United States when he was three years old. Since his parents always spoke Yiddish and English with him, he never learned Russian. Growing up in Brooklyn, New York City, Asimov taught himself to read at the age of five and remained fluent in Yiddish as well as English. Asimov wrote of his father, "My father, for all his education as an Orthodox Jew, was not Orthodox in his heart", and "he didn't recite the myriad prayers prescribed for every action, and he never made any attempt to teach them to me."

His parents owned a succession of candy stores, and everyone in the family was expected to work in them.

Asimov began reading science fiction pulp magazines at a young age. His father, as a matter of principle, forbade reading the pulps, as he considered them to be trash, but Asimov persuaded him that the science fiction magazines had "Science" in the title, so they were educational. Around the age of eleven, he began to write his own stories, and by age nineteen — after he discovered science fiction fandom — he was selling stories to the science fiction magazines. John W. Campbell, then editor of Astounding Science Fiction, had a strong formative influence on Asimov and eventually became a personal friend.

Asimov attended New York City Public Schools, including Boys High School, in Brooklyn, New York. From there he went on to Seth Low Junior College for two years, then to Columbia University for the remainder of his master's degree, from which he graduated in 1939, eventually returning to earn a PhD in biochemistry in 1948. In between, he spent three years during World War II working as a civilian at the Philadelphia Navy Yard's Naval Air Experimental Station. After the war ended, he was drafted into the U.S. Army, serving for almost nine months before receiving an honorable discharge. In the course of his brief military career, he rose to the rank of corporal on the basis of his typing skills, and narrowly avoided participating in the 1946 atomic bomb tests at Bikini Atoll.

After completing his doctorate, Asimov joined the faculty of the Boston University School of Medicine, with which he remained associated thereafter. From 1958, this was in a non-teaching capacity, as he turned to writing full time (his writing income had already exceeded his academic salary). Being tenured meant that he retained the title of associate professor, and in 1979 the university honored his writing by promoting him to full professor of biochemistry. Asimov's personal papers from 1965 onward are archived at the university's Mugar Memorial Library, to which he donated them at the request of curator Howard Gottlieb. The collection fills 464 boxes, or seventy - one meters of shelf space.

Asimov married Gertrude Blugerman (1917, Canada – 1990, Boston) on July 26, 1942. They had two children, David (b. 1951) and Robyn Joan (b. 1955). After a separation in 1970, he and Gertrude divorced in 1973, and Asimov married Janet O. Jeppson later that year.

Asimov was a claustrophile: he enjoyed small, enclosed spaces. In the third volume of his autobiography, he recalls a childhood desire to own a magazine stand in a New York City Subway station, within which he could enclose himself and listen to the rumble of passing trains while reading.

Asimov was afraid of flying, only doing so twice in his entire life (once in the course of his work at the Naval Air Experimental Station, and once returning home from the army base in Oahu in 1946). He seldom traveled great distances, partly because his aversion to flying complicated the logistics of long distance travel. This phobia influenced several of his fiction works, such as the Wendell Urth mystery stories and the Robot novels featuring Elijah Baley. In his later years, he found he enjoyed traveling on cruise ships, and on several occasions he became part of the cruises' "entertainment", giving science themed talks on ships such as the RMS Queen Elizabeth 2.

Asimov was an able public speaker and was a frequent fixture at science fiction conventions, where he was friendly and approachable. He patiently answered tens of thousands of questions and other mail with postcards, and was pleased to give autographs. He was of medium height, stocky, with mutton chop whiskers and a distinct Brooklyn accent. His physical dexterity was very poor. He never learned to swim or ride a bicycle; however, he did learn to drive a car after he moved to Boston. In his humor book Asimov Laughs Again, he describes Boston driving as "anarchy on wheels".

Asimov's wide interests included his participation in his later years in organizations devoted to the comic operas of Gilbert and Sullivan and in The Wolfe Pack, a group of devotees of the Nero Wolfe mysteries written by Rex Stout. Many of his short stories mention or quote Gilbert and Sullivan. He was a prominent member of the Baker Street Irregulars, the leading Sherlock Holmes society. He was also a member of the all - male literary banqueting club the Trap Door Spiders, which served as the basis of his fictional group of mystery solvers the Black Widowers.

In 1984, the American Humanist Association (AHA) named him the Humanist of the Year. From 1985 until his death in 1992, he served as president of the AHA, an honorary appointment; his successor was his friend and fellow writer Kurt Vonnegut. He was also a close friend of Star Trek creator Gene Roddenberry, and earned a screen credit on Star Trek: The Motion Picture for advice he gave during production (generally, confirming to Paramount Pictures that Roddenberry's ideas were legitimate science - fictional extrapolation).

Asimov suffered a heart attack in 1977, and had triple bypass surgery in December 1983. When he died in New York City on April 6, 1992, his brother Stanley reported heart and kidney failure as the cause of death. He was survived by his second wife, Janet, and his children from his first marriage. Ten years after his death, Janet Asimov's edition of Asimov's autobiography, It's Been a Good Life, revealed that the myocardial and renal complications were the result of an infection by HIV, which he had contracted from a blood transfusion received during his bypass operation. Janet Asimov wrote in the epilogue of It's Been a Good Life that Asimov had wanted to "go public," but his doctors convinced him to remain silent, warning that the anti - AIDS prejudice would likely extend to his family members. Asimov's family considered disclosing his condition after his death, but the controversy that erupted when Arthur Ashe announced his own AIDS infection (also contracted from a blood transfusion during heart surgery) convinced them otherwise. Ten years later, after most of Asimov's doctors had died, Janet and Robyn Asimov agreed that the AIDS story should be made public.

Asimov's career can be divided into several time periods. His early career, dominated by science fiction, began with short stories in 1939 and novels in 1950. This lasted until about 1958, all but ending after publication of The Naked Sun. He began publishing nonfiction in 1952, co-authoring a college level textbook called Biochemistry and Human Metabolism. Following the brief orbit of the first man made satellite Sputnik I by the USSR in 1957, his production of nonfiction, particularly popular science books, greatly increased, with a consequent drop in his science fiction output. Over the next quarter century, he wrote only four science fiction novels. Starting in 1982, the second half of his science fiction career began with the publication of Foundation's Edge. From then until his death, Asimov published several more sequels and prequels to his existing novels, tying them together in a way he had not originally anticipated, making a unified series. There are, however, many inconsistencies in this unification, especially in his earlier stories.

Asimov believed that his most enduring contributions would be his "Three Laws of Robotics" and the Foundation Series. Furthermore, the Oxford English Dictionary credits his science fiction for introducing the words positronic (an entirely fictional technology), psychohistory (which is also used for a different study on historical motivations) and robotics into the English language. Asimov coined the term robotics without suspecting that it might be an original word; at the time, he believed it was simply the natural analogue of words such as mechanics and hydraulics, but for robots. Unlike his word psychohistory, the word robotics continues in mainstream technical use with Asimov's original definition. Star Trek: The Next Generation featured androids with "positronic brains" giving Asimov full credit for "inventing" this fictional technology. His fictional writings for space and time are similar to the writings of Brian W Aldiss, Poul Anderson and Gregory Benford.

Asimov first began reading the science fiction pulp magazines sold in his family's confectionery store in 1929. He came into contact with science fiction fandom in the mid 1930s, particularly the circle that became the Futurians. He began writing his first science fiction story, "Cosmic Corkscrew", in 1937, but failed to finish it until June 1938, when he was inspired to do so after a visit to the offices of Astounding Science Fiction. He finished "Cosmic Corkscrew" on June 19, and submitted the story in person to Astounding editor John W. Campbell two days later. Campbell rejected "Cosmic Corkscrew", but encouraged Asimov to keep trying, and Asimov did so. Asimov sold his third story, "Marooned Off Vesta", to Amazing Stories magazine in October, and it appeared in the March 1939 issue. He continued to write and sometimes sell stories to the science fiction pulps.

In 1941, he published his 32nd story, "Nightfall", which has been described as one of "the most famous science - fiction stories of all time". In 1968 the Science Fiction Writers of America voted "Nightfall" the best science fiction short story ever written. In his short story collection Nightfall and Other Stories he wrote, "The writing of 'Nightfall' was a watershed in my professional career ... I was suddenly taken seriously and the world of science fiction became aware that I existed. As the years passed, in fact, it became evident that I had written a 'classic'".

"Nightfall" is an archetypal example of social science fiction, a term coined by Asimov to describe a new trend in the 1940s, led by authors including Asimov and Heinlein, away from gadgets and space opera and toward speculation about the human condition.

By 1941 Asimov had begun selling regularly to Astounding, which was then the field's leading magazine. From 1943 to 1949, all of his published science fiction appeared in Astounding.

In 1942 he published the first of his Foundation stories—later collected in the Foundation Trilogy: Foundation (1951), Foundation and Empire (1952), and Second Foundation (1953) — which recount the collapse and rebirth of a vast interstellar empire in a universe of the future. Taken together, they are his most famous work of science fiction, along with the Robot Series. Many years later, due to pressure by fans on Asimov to write another, he continued the series with Foundation's Edge (1982) and Foundation and Earth (1986), and then went back to before the original trilogy with Prelude to Foundation (1988) and Forward the Foundation (1992). The series features his fictional science of Psychohistory in which the future course of the history of large populations can be predicted.

His positronic robot stories — many of which were collected in I, Robot (1950) — were begun at about the same time. They promulgated a set of rules of ethics for robots (Three Laws of Robotics) and intelligent machines that greatly influenced other writers and thinkers in their treatment of the subject. One such short story, "The Bicentennial Man", was made into a film starring Robin Williams.

The 2004 film I, Robot, starring Will Smith, was based on a script by Jeff Vintar entitled Hardwired, with Asimov's ideas incorporated later after acquiring the rights to the I, Robot title. It is not related to the I, Robot script by Harlan Ellison, who collaborated with Asimov himself to create a version that captured the spirit of the original. Asimov is quoted as saying that Ellison's screenplay would lead to "the first really adult, complex, worthwhile science fiction movie ever made". The screenplay was published in book form in 1994, after hopes of seeing it in film form were becoming slim.

Besides movies, his Foundation and Robot stories have inspired other derivative works of science fiction literature, many by well known and established authors such as Roger MacBride Allen, Greg Bear, Gregory Benford and David Brin. These appear to have been done with the blessing, and often at the request of, Asimov's widow Janet Asimov.

In 1948 he also wrote a spoof chemistry article, "The Endochronic Properties of Resublimated Thiotimoline". At the time, Asimov was preparing his own doctoral dissertation, and for the oral examination to follow that. Fearing a prejudicial reaction from his graduate school evaluation board at Columbia University, Asimov asked his editor that it be released under a pseudonym, yet it appeared under his own name because of a mistake by the publisher. During his oral examination shortly thereafter, Asimov grew concerned at the scrutiny he received. At the end of the examination, one evaluator turned to him, smiling, and said "Mr. Asimov, tell us something about the thermodynamic properties of the compound thiotimoline". The stuttering Asimov was sent out of the room then. After a 20 minute or so wait, he was summoned back into the Examination Room and congratulated as "Dr. Asimov."

In 1949, the book publisher Doubleday's science fiction editor Walter I. Bradbury accepted Asimov's unpublished novelette "Grow Old Along With Me" (40,000 words) for publication, but requested that it be extended to a full novel of 70,000 words. The book appeared under the Doubleday imprint in January 1950 with the title of Pebble in the Sky. The Doubleday company went on to publish five more original science fiction novels by Asimov in the 1950s, along with the six juvenile Lucky Starr novels, under the pseudonym of "Paul French". Doubleday also published collections of Asimov's short stories, beginning with The Martian Way and Other Stories in 1955. The early 1950s also saw the Gnome Press company publishing one collection of Asimov's positronic robot stories as I, Robot and his Foundation stories and novelettes as the three books of the Foundation Trilogy. More positronic robot stories were republished in book form as The Rest of the Robots.

When new science fiction magazines, notably Galaxy magazine and The Magazine of Fantasy & Science Fiction, appeared in the 1950s, Asimov began publishing short stories in them as well. He would later refer to the 1950s as his "golden decade". A number of these stories are included in his Best of anthology, including "The Last Question" (1956), on the ability of humankind to cope with and potentially reverse the process of entropy. It was his personal favorite and considered by many to be equal to "Nightfall". Asimov wrote of it in 1973:

Why is it my favorite? For one thing I got the idea all at once and didn't have to fiddle with it; and I wrote it in white - heat and scarcely had to change a word. This sort of thing endears any story to any writer.

Then, too, it has had the strangest effect on my readers. Frequently someone writes to ask me if I can give them the name of a story, which they think I may have written, and tell them where to find it. They don't remember the title but when they describe the story it is invariably "The Last Question". This has reached the point where I recently received a long distance phone call from a desperate man who began, 'Dr. Asimov, there's a story I think you wrote, whose title I can't remember – ' at which point I interrupted to tell him it was "The Last Question" and when I described the plot it proved to be indeed the story he was after. I left him convinced I could read minds at a distance of a thousand miles.

In December 1974, the former Beatle Paul McCartney approached Asimov and asked him if he could write the screenplay for a science - fiction movie musical. McCartney had a vague idea for the plot and a small scrap of dialogue; he wished to make a film about a rock band whose members discover they are being impersonated by a group of extraterrestrials. The band and their impostors would likely be played by McCartney's group Wings, then at the height of their career. Intrigued by the idea, although he was not generally a fan of rock music, Asimov quickly produced a "treatment" or brief outline of the story. He adhered to McCartney's overall idea, producing a story he felt to be moving and dramatic. However, he did not make use of McCartney's brief scrap of dialogue, and probably as a consequence, McCartney rejected the story. The treatment now exists only in the Boston University archives.

Beginning in 1977, Asimov lent his name to Isaac Asimov's Science Fiction Magazine (now Asimov's Science Fiction) and penned an editorial for each issue. There was also a short lived Asimov's SF Adventure Magazine and a companion Asimov's Science Fiction Anthology reprint series, published as magazines (in the same manner as the stablemates Ellery Queen's Mystery Magazine's and Alfred Hitchcock's Mystery Magazine's "anthologies").

During the late 1950s and 1960s, Asimov shifted gears somewhat, and substantially decreased his fiction output (he published only four adult novels between 1957's The Naked Sun and 1982's Foundation's Edge, two of which were mysteries). At the same time, he greatly increased his non - fiction production, writing mostly on science topics; the launch of Sputnik in 1957 engendered public concern over a "science gap", which Asimov's publishers were eager to fill with as much material as he could write.

Meanwhile, the monthly Magazine of Fantasy and Science Fiction invited him to continue his regular non-fiction column, begun in the now folded bimonthly companion magazine Venture Science Fiction Magazine, ostensibly dedicated to popular science, but with Asimov having complete editorial freedom. The first of the F&SF columns appeared in November 1958, and they followed uninterrupted thereafter, with 399 entries, until Asimov's terminal illness. These columns, periodically collected into books by his principal publisher, Doubleday, helped make Asimov's reputation as a "Great Explainer" of science, and were referred to by him as his only pop science writing in which he never had to assume complete ignorance of the subjects at hand on the part of his readers. The popularity of his first wide ranging reference work, The Intelligent Man's Guide to Science, also allowed him to give up most of his academic responsibilities and become essentially a full time freelance writer.

Asimov wrote several essays on the social contentions of his time, including "Thinking About Thinking" and "Science: Knock Plastic" (1967).

The great variety of information covered in Asimov's writings once prompted Kurt Vonnegut to ask, "How does it feel to know everything?" Asimov replied that he only knew how it felt to have the reputation of omniscience — "Uneasy". In the introduction to his story collection Slow Learner, Thomas Pynchon admitted that he relied upon Asimov's science popularizations (and the Oxford English Dictionary) to provide his knowledge of entropy.

It is a mark of the friendship and respect accorded Asimov by Arthur C. Clarke that the so-called "Asimov - Clarke Treaty of Park Avenue", put together as they shared a cab ride along Park Avenue in New York, stated that Asimov was required to insist that Clarke was the best science fiction writer in the world (reserving second - best for himself), while Clarke was required to insist that Asimov was the best science writer in the world (reserving second - best for himself). Thus the dedication in Clarke's book Report on Planet Three (1972) reads: "In accordance with the terms of the Clarke - Asimov treaty, the second - best science writer dedicates this book to the second - best science - fiction writer."

Asimov coined the term "robotics" in his 1941 story Liar!, though he later remarked that he believed then that he merely using an existing word, as he stated in Gold ("The Robot Chronicles"), though while acknowledging the Oxford Dictionary reference, he incorrectly states that the word was first printed about one third of the way down the first column of page 100, Astounding Science Fiction, March 1942 printing of his short story Runaround.

Asimov also coined the term Spome in a paper entitled, “There’s No Place Like Spome” in Atmosphere in Space Cabins and Closed Environments, originally presented as a paper to the American Chemical Society on September 13, 1965. It refers to any system closed with respect to matter and open with respect to energy capable of sustaining human life indefinitely.

In addition to his interest in science, Asimov was also greatly interested in history. Starting in the 1960s, he wrote 14 popular history books, most notably The Greeks: A Great Adventure (1965), The Roman Republic (1966), The Roman Empire (1967), The Egyptians (1967) and The Near East: 10,000 Years of History (1968).

He published Asimov's Guide to the Bible in two volumes — covering the Old Testament in 1967 and the New Testament in 1969 — and then combined them into one 1,300 page volume in 1981. Complete with maps and tables, the guide goes through the books of the Bible in order, explaining the history of each one and the political influences that affected it, as well as biographical information about the important characters. His interest in literature manifested itself in several annotations of literary works, including Asimov's Guide to Shakespeare (1970), Asimov's Annotated Paradise Lost (1974), and The Annotated Gulliver's Travels (1980).

Asimov was also a noted mystery author and a frequent contributor to Ellery Queen's Mystery Magazine. He began by writing science fiction mysteries such as his Wendell Urth stories but soon moved on to writing "pure" mysteries. He only published two full length mystery novels but he wrote several stories about the Black Widowers, a group of men who met monthly for dinner, conversation, and a puzzle. He got the idea for the Widowers from his own association in a stag group called the Trap Door Spiders and all of the main characters (with the exception of the waiter, Henry, whom he admitted resembled Wodehouse's Jeeves) were modeled after his closest friends.

Toward the end of his life, Asimov published a series of collections of limericks, mostly written by himself, starting with Lecherous Limericks, which appeared in 1975. Limericks: Too Gross, whose title displays Asimov's love of puns, contains 144 limericks by Asimov and an equal number by John Ciardi. He even created a slim volume of Sherlockian limericks (and embarrassed one fan by autographing her copy with an impromptu limerick that rhymed 'Nancy' with 'romancy'). Asimov featured Yiddish humor in Azazel, The Two Centimeter Demon. The two main characters, both Jewish, talk over dinner, or lunch, or breakfast, about anecdotes of "George" and his friend Azazel. Asimov's Treasury of Humor is both a working joke book and a treatise propounding his views on humor theory. According to Asimov, the most essential element of humor is an abrupt change in point of view, one that suddenly shifts focus from the important to the trivial, or from the sublime to the ridiculous.

Particularly in his later years, Asimov to some extent cultivated an image of himself as an amiable lecher. In 1971, as a response to the popularity of sexual guidebooks such as The Sensuous Woman (by "J") and The Sensuous Man (by "M"), Asimov published The Sensuous Dirty Old Man under the byline "Dr. 'A'" (although his full name was printed on the paperback edition, first published 1972).

Asimov published two volumes of autobiography: In Memory Yet Green (1979) and In Joy Still Felt (1980). A third autobiography, I. Asimov: A Memoir, was published in April 1994. The epilogue was written by his widow Janet Asimov a decade after his death. It's Been a Good Life (2002), edited by Janet, is a condensed version of his three autobiographies. He also published three volumes of retrospectives of his writing, Opus 100 (1969), Opus 200 (1979), and Opus 300 (1984).

In 1987, the Asimovs co-wrote How to Enjoy Writing: A Book of Aid and Comfort. In it they offer advice on how to maintain a positive attitude and stay productive when dealing with discouragement, distractions, rejection and thick headed editors. The book includes many quotations, essays, anecdotes and husband - wife dialogues about the ups and downs of being an author.

Asimov and Star Trek creator Gene Roddenberry developed a unique relationship during Star Trek's initial launch in the late 1960s. Asimov wrote a critical essay on Star Trek's scientific accuracy for TV Guide magazine. Roddenberry retorted respectfully with a personal letter explaining the limitations of accuracy when writing a weekly series. Asimov corrected himself with a follow - up essay to TV Guide claiming despite its inaccuracies, that Star Trek was a fresh and intellectually challenging science fiction television show. The two remained friends to the point where Asimov even served as an advisor on a number of Star Trek projects.

In 1973, Asimov published a proposal for calendar reform, called the World Season Calendar. It divides the year into four seasons (named A – D) of 13 weeks (91 days) each. This allows days to be named, e.g., "D - 73" instead of December 1. An extra Year Day is added for a total of 365 days.