Parents wonder why the streams are bitter, when they themselves have poisoned the fountain.

If you've got them by the balls their hearts and minds will follow.

You’ll miss the best things if you keep your eyes shut.

Believe nothing, no matter where you read it, or who said it, no matter if I have said it, unless it agrees with your own reason and your own common sense.

No matter how thin you slice it, there will always be two sides.

My idea of an agreeable person is a person who agrees with me.

It is by no means an irrational fancy that, in a future existence, we shall look upon what we think our present existence, as a dream.

The English contribution to world cuisine - the chip.

Memory... is an internal rumour.

Circumstances do not make the man, they reveal him.

Those who hammer their guns into plows, will plow for those who do not.

I am not ashamed to confess that I am ignorant of what I do not know.

No flying machine will ever fly from New York to Paris.

If information and knowledge are central to democracy, they are the conditions for development.

I am dying from the treatment of too many physicians.

I sound my barbaric yawp over the rooftops of the world.

Courage is being scared to death... and saddling up anyway.

He who never made a mistake, never made a discovery.

All men are prepared to accomplish the incredible if their ideals are threatened.

Maybe, just once, someone will call me 'Sir' without adding, 'You're making a scene.'

If we all worked on the assumption that what is accepted as true is really true, there would be little hope of advance.