If my doctor told me I had only six minutes to live, I wouldn’t brood. I’d type a little faster.

Writing, to me, is simply thinking through my fingers.

Nothing interferes with my concentration. You could put on an orgy in my office and I wouldn't look up. Well, maybe once.

Well, I can type all day without getting tired. Response to a question as to which he preferred, women or writing.

There is no such thing as a moral or an immoral book. Books are well written, or badly written. That is all.

From my close observation of writers ... they fall into two groups: 1) those who bleed copiously and visibly at any bad review, and 2) those who bleed copiously and secretly at any bad review.

Anybody can make history. Only a great man can write it.

In 1936, I first wrote science fiction. It was a long-winded attempt at writing an endless novel ... which died. I remember one sentence: 'Whole forests stood sere and brown in midsummer.' That was the first Asimovian science-fiction sentence.

I type and think at 90 words a minute.

Until I became a published writer, I remained completely ignorant of books on how to write and courses on the subject ... they would have spoiled my natural style; made me observe caution; would have hedged me with rules.

I write for the same reason I breathe — because if I didn't, I would die.