“If 50 million people say a foolish thing, it is still a foolish thing.”

If we don’t change, we don’t grow. If we don’t grow, we aren’t really living.

The history books which contain no lies are extremely tedious.

Nine tenths of education is encouragement.

I prefer the errors of enthusiasm to the indifference of wisdom.

Science neither cares to please nor to displease. She is inhuman. It is not science but poetry that charms and consoles. And that is why poetry is more necessary than science.

When a thing has been said and said well, have no scruple. Take it and copy it.

Of all sexual aberrations, chastity is the strangest.

Dictionary: The universe in alphabetical order.

Man is a rational animal. He can think up a reason for anything he wants to believe.

The wonder is, not that the field of stars is so vast, but that man has measured it.

People who have no weaknesses are terrible; there is no way of taking advantage of them.

It is by acts and not by ideas that people live.

It is not customary to love what one has

If the path be beautiful, let us not ask where it leads.

Without lies, humanity would perish of despair and boredom

Never lend books, for no one ever returns them; the only books I have in my library are books that other folks have lent me.

Men will cease to be fools only when they cease to be men.

Only a foolish dog barks at a flying bird.

I love fools’ experiments. I am always making them.

There are no fools so troublesome as those who have some wit.

It’s easier to fool people than to convince them that they have been fooled.

Last words are for fools who haven’t said enough.

Don’t let anybody fool you. The progressive movement today is winning.

Even a fool learns something once it hits him.