Things do change. The only question is that since things are deteriorating so quickly, will society and man's habits change quickly enough?

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.

Whoever educates himself and improves his own morals & character is superior to the man who tries to teach & train others.

Do not quit too soon. The future is bright like a shining diamond.

(On surviving on the raft for 47 days) We had truly made it on a wing and prayer.

The best years of your life are the ones in which you decide your problems are your own.

Maybe violent wickedness can be decapitated, but stupidity has too many heads.

When in still air and still in summertime A leaf has had enough of this, it seems To make up its mind to go; fine as a sage Its drifting in detachment down the road.

What I really want to do is to write a hilarious farce.

The score is doing a lot of work. It's like Wagner. It's like a yak carrying people.

I've made up stuff that's turned out to be real, that's the spooky part.

Be realistic and truthful - and tell Hong Kong businessmen honestly that they should go for long-term investments since it is unlikely money can be made in the short haul.