A happy man is too satisfied with the present to dwell too much on the future.

Great spirits have always encountered violent opposition from mediocre minds.

Three great forces rule the world: stupidity, fear and greed.

Bear in mind that the wonderful things you learn in your schools are the work of many generations. All this is put in your hands as your inheritance in order that you may receive it, honor it, add to it, and one day faithfully hand it on to your children.

It would seem that men always need some idiotic fiction in the name of which they can hate one another. Once it was religion. Now it is the State.

I don't know what weapons will be used in the Third World War. But I can tell you what they'll use in the Fourth - rocks!

If tomorrow were never to come, it would not be worth living today.