It is a cliche that most cliches are true, but then like most cliches, that cliche is untrue.

There is geometry in the humming of the strings. There is music in the spacing of the spheres.

Nothing is more intolerable than to have to admit to yourself your own errors.

Where you stand depends on where you sit.

If you're happy, don't worry you'll get over it.

But the fact that some geniuses were laughed at does not imply that all who are laughed at are geniuses. They laughed at Columbus, they laughed at Fulton, they laughed at the Wright brothers. But they also laughed at Bozo the Clown.

I don't know, I don't care, and it doesn't make any difference.

Act enthusiastic and you will be enthusiastic

When you undervalue what you do, the world will undervalue who you are

Immoderate desire is the mark of a child, not a man.

Good means not merely not to do wrong, but rather not to desire to do wrong.

Experience is the only prophecy of wise men.

What a liberation to realize that the “voice in my head” is not who I am. Who am I then? The one who sees that.

You are braver than you believe, stronger than you seem, and smarter than you think.

Respect yourself if you would have others respect you.

The smaller the mind, the greater the conceit.

Having a great intellect is no path to being happy.

He alone is free who lives with free consent under the entire guidance of reason.

Wisdom... comes not from age, but from education and learning.

Learning and wisdom are superfluities, the surface glitter merely, but it is the heart that is the seat of all power.

Strength does not come from physical capacity. It comes from an indomitable will.