It is neither good nor bad, but thinking makes it so.

There are four ways, and only four ways, in which we have contact with the world. We are evaluated and classified by these four contacts: what we do, how we look, what we say, and how we say it.

He who conquers others is strong; he who conquers himself is mighty.

Proverbs are short sentences drawn from long experience.

Experience is merely the name men gave to their mistakes.

Do not say a little in many words, but a great deal in few!

Colorless green ideas sleep furiously

A person who spends more than he earns is a fool

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

Share our similarities, celebrate our differences.

You laugh at me because I'm different, I laugh at you because you're all the same.

Appearances often are deceiving.

Science is organized knowledge. Wisdom is organized life.

Only idiots refuse to change their minds.

The essence of knowledge is, having it, to apply it; not having it, to confess your ignorance.

Although our intellect always longs for clarity and certainty, our nature often finds uncertainty fascinating.

Be curious, not judgmental.

Man is the only creature who refuses to be what he is.

Nature is pleased with simplicity. And nature is no dummy

Wonder is the beginning of wisdom.

Tomorrow hopes we have learned something from yesterday.