We have modified our environment so radically that we must now modify ourselves to exist in this new environment.

Let us remember that the automatic machine is the precise economic equivalent of slave labor. Any labor which competes with slave labor must accept the economic consequences of slave labor.

There is one quality more important than know-how.... This is know-how by which we determine not only how to accomplish our purposes, but what our purposes are to be.

The world of the future will be an even more demanding struggle against the limitations of our intelligence, not a comfortable hammock in which we can lie down to be waited upon by our robot slaves.

There are no answers, only cross references.

Progress imposes not only new possibilities for the future but new restrictions.

Science is a way of life which can only flourish when men are free to have faith.

A single inattention may lose a chess game, whereas a single successful approach to a problem, among many which have been relegated to the wastebasket, will make a mathematician's reputation.

The nervous system and the automatic machine are fundamentally alike in that they are devices, which make decisions on the basis of decisions they made in the past.

To live effectively is to live with adequate information.

Any useful logic must concern itself with Ideas with a fringe of vagueness and a Truth that is a matter of degree.

Every service is a product of double honor

Workers who pick the food we eat cannot afford to feed themselves.

Writers are cannibals. They really are. They are predators, and if you are friends with them, and if you say anything funny at dinner, or if anything good happens to you, you are in big trouble.

Jesus.""I thought you were Jewish."He pressed his lips together for a second before looking at me. "Fine. I'll say Moses. Or Abraham. Happy?""I doubt Jesus is.

It's very expensive to be me.

Sometimes my plot lines are so convoluted, I get calls from friends at 3 am saying; you SOB, you'll never pull this one off.

The philosophers are wrong: it is not words that kill, it is silence.

Almost all rich veins of original and striking speculation have been opened by systematic half-thinkers.

So the majority of Americans are conservatives. They believe in things like the Constitution. I know that's weird to some people but they believe in it.

We can't dwell upon another's ingratitude without using up our time and talents unprofitably.