It is not enough to have a good mind; the main thing is to use it well.

Every aquarium will eventually leak.

Beer: The cause of, and solution to, all of life's problems.

A scholar who cherishes the love of comfort is not fit to be deemed a scholar.

The noblest pleasure is the joy of understanding.

Your reputation is in the hands of others. That's what the reputation is. You can't control that. The only thing you can control is your character.

The only real laughter comes from despair.

What you're thinking is what you're becoming.

Every intelligent individual wants to know what makes him tick, and yet is at once fascinated and frustrated by the fact that oneself is the most difficult of all things to know.

Whatever you think the world is withholding from you, you are withholding from the world.

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

If you are neutral in situations of injustice, you have chosen the side of the oppressor.

When you learn, teach, when you get, give.

It is a wise man that does know the contented man is never poor, whilst the discontented man is never rich.

To a wise and good man the whole earth is his fatherland.

Half the world is composed of people who have something to say and can't, and the other half who have nothing to say and keep on saying it.

There is always time to add a word, never to withdraw one.

Yesterday I was clever, so I wanted to change the world. Today I am wise, so I am changing myself.

All that we see or seem is but a dream within a dream.

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

A man is literally what he thinks.