Had we not pursued the hydrogen bomb, there is a very real threat that we would now all be speaking Russian. I have no regrets.

The science of today is the technology of tomorrow.

Secrecy in science does not work. Withholding information does more damage to us than to our competitors.

There's no system foolproof enough to defeat a sufficiently great fool.

I believe in evil. It is the property of all those who are certain of truth. Despair and fanaticism are only differing manifestations of evil.

The extinction of the human race will come from its inability to EMOTIONALLY comprehend the exponential function.

Science attempts to find logic and simplicity in nature. Mathematics attempts to establish order and simplicity in human thought.

No endeavor that is worthwhile is simple in prospect; if it is right, it will be simple in retrospect.

We must learn to live with contradictions, because they lead to deeper and more effective understanding.

I think that intellectuals who end up in hell will have to read page proofs and check indexes there.

A fact is a simple statement that everyone believes. It is innocent, unless found guilty. A hypothesis is a novel suggestion that no one wants to believe. It is guilty, until found effective.

The world is your perception of it. Inside and outside always match - they're reflections of each other. The world is a mirror image of your mind.

More free time means more time to waste. The worker who used to have only a little time in which to get drunk and beat his wife now has time to get drunk beat his wife - and watch TV.

My fantasy of Cuba was that everybody was going to be going around looking like Fidel, with green uniforms - and it was very different from my vision of how Cuba was going to be.

The traveler must be born again on the road, and earn a passport from the elements.

Sometime in 1964 I realized that I was a victim of a printmaking obsession, a condition that persists today.

I have not lived as a woman. I have lived as a man. I've just done what I damn well wanted to, and I've made enough money to support myself, and ain't afraid of being alone

The only feelings you really need to fear are those you ignore.

The acceptance of homosexuality is the last step in the decline of Gentile civilization.

It opens our eyes to many quite weird possibilities about disease that most medical scientists, tending to be unaware of current evolutionary thought, don't think of.

It's exciting to watch people do and write and say what they feel like doing, writing and saying.