There is no belief, however foolish, that will not gather its faithful adherents who will defend it to the death.

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.

We read each other through our eyes, and anatomically they are an extension of our brains. When we catch someone's eye, we look into a mind.

Balancing your money is the key to having enough.

The metaphor is probably the most fertile power possessed by man

In the learning process, a learner does encounter some difficulty. But with diligent, you will master the act.

What is design? It's where you stand with a foot in two worlds - the world of technology and the world of people and human purposes - and you try to bring the two together.

If you want to be transparent with your people, do not do anything cosmetic, whether to deceive your people or to get some applaud from the West.

We have to be extremely vigilant and extremely careful when it comes to nuclear. Nuclear changes the whole ball game.

I think of my art materials not as junk but as garbage. Manure, actually: it goes from being the waste material of one being to the life-source of another.

No matter how well a person writes, a successful book is a team effort involving many, many people.

In the last 10 years, in narcotics task forces, in a number of violent crime task forces, we've worked very closely together with state and local law enforcement.