It has been my philosophy of life that difficulties vanish when faced boldly.

People who think they know everything are a great annoyance to those of us who do.

The saddest aspect of life right now is that science gathers knowledge faster than society gathers wisdom.

When stupidity is considered patriotism, it is unsafe to be intelligent.

So the universe is not quite as you thought it was. You'd better rearrange your beliefs, then. Because you certainly can't rearrange the universe.

In life, unlike chess, the game continues after checkmate.

People think of education as something that they can finish.

There are no nations! There is only humanity. And if we don't come to understand that right soon, there will be no nations, because there will be no humanity.

A robot may not injure a human being, or, through inaction, allow a human being to come to harm.

Violence is the last refuge of the incompetent.

A robot must protect its own existence as long as such protection does not conflict with the First or Second Laws.

Perfection is pure-fiction.

Adversity not only draws people together but brings forth that beautiful inward friendship.

Major North and myself went out in advance of the command several miles and killed a number of buffaloes.

Real faith is refined in the fires and storms of pain.

Whoever kindles the flames of intolerance in America is lighting a fire underneath his own home.

If you accept full responsibility for yourself, you will be released forever from expectation, resentment, blame and guilt.

The problems are solved, not by giving new information, but by arranging what we have always known.

If you hype something and it succeeds, you're a genius - it wasn't a hype. If you hype it and it fails, then it was just a hype.

The world is a possibility if only you'll discover it.

Television... is not a substitute for print.