If you're born in a cubicle and grow up in a corridor, and work in a cell, and vacation in a crowded sun-room, then coming up into the open with noth….

I don't believe in an afterlife, so I don't have to spend my whole life fearing hell, or fearing heaven even more. For whatever the tortures of hell,….

You show me someone who can't understand people and I'll show you someone who has built up a false image of himself..

The human mind works at low efficiency. Twenty percent is the figure usually given. When, momentarily, there is a flash of greater power, it is terme….

Old men tend to forget what thought was like in their youth; they forget the quickness of the mental jump, the daring of the youthful intuition, the ….

You don't have to be able to lay eggs to know when one of them is rotten..

Self-education is, I firmly believe, the only kind of education there is..

If I had felt then as I feel now, or as I felt a few years after I had married her, nothing could possibly have persuaded me to marry a woman who smo….

Only a lie that wasn't ashamed of itself could possibly succeed..

Postulates are based on assumption and adhered to by faith. Nothing in the Universe can shake them..

And above all things, never think that you're not good enough yourself. A man should never think that. My belief is that in life people will take you….

Past glories are poor feeding..

I do not use airplanes. They strike me as unsporting. You can have an automobile accident-and survive. You can be on a sinking ship-and survive. You ….

That's the harm of Close Encounters: that it convinces tens of millions that that's what just science fiction is..

God, how that stings! I've spent a lifetime loving science fiction and now I find that you must expect nothing of something that's just science ficti….

Scientists expect to be improved on and corrected; they hope to be.

Self-education is a continuing source of pleasure to me, for the more I know, the fuller my life is and the better I appreciate my own existence.

I am the beneficiary of a lucky break in the genetic sweepstakes..

Humanity is cutting down its forests, apparently oblivious to the fact that we may not be able to live without them..

I believe in evidence. I believe in observation, measurement, and reasoning, confirmed by independent observers. I'll believe anything, no matter how….

He always pictured himself a libertarian, which to my way of thinking means "I want the liberty to grow rich and you can have the liberty to starve".….