Man is not a rational animal; he is a rationalizing animal.

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About Robert A. Heinlein

Robert Anson Heinlein (7 July 1907 – 8 May 1988) was one of the most popular, influential, and controversial authors of science fiction of the 20th Century.

Biography information from Wikiquote

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Additional quotes by Robert A. Heinlein

Nor would anybody suspect. If was one thing all people took for granted, was conviction that if you feed honest figures into a computer, honest figures come out. Never doubted it myself till I met a computer with a sense of humor.

Then I glanced at the ring on my finger.

The Snake That Eats Its Own Tail, Forever and Ever. I know where I came from — but where did all you zombies come from?

I felt a headache coming on, but a headache powder is one thing I do not take. I did once — and you all went away.

So I crawled into bed and whistled out the light.

You aren’t really there at all. There isn’t anybody but me — Jane — here alone in the dark.

I miss you dreadfully!