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

The noblest pleasure is the joy of understanding.

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

Everything excellent is as difficult as it is rare.

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

All great achievements require time.

Desire, ignorance, and inequality—this is the trinity of bondage.

It is not titles that honor men, but men that honor titles.

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

All truth passes through three stages. First, it is ridiculed. Second, it is violently opposed. Third, it is accepted as being self-evident.

Every aquarium will eventually leak.

Talent is God given. Be humble. Fame is man-given. Be grateful. Conceit is self-given. Be careful.

Science is organized knowledge. Wisdom is organized life.

Don't criticize what you don't understand, son. You never walked in that man's shoes.

Be realistic: Plan for a miracle

By three methods we may learn wisdom: first, by reflection which is noblest; second, by imitation, which is the easiest; and third, by experience, which is the bitterest.

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

Only idiots refuse to change their minds.

To be wronged is nothing unless you continue to remember it.

Stupidity is a talent for misconception.

A crust eaten in peace is better than a banquet partaken in anxiety.