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

Everybody is ignorant, only on different subjects.

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.

The only real laughter comes from despair.

Doubt is the origin of wisdom

Judge a man by his questions rather than by his answers.

We never see ourselves as others see us.

Thought can be so seductive and hypnotic that it absorbs your attention totally, so you become your thoughts.

Whatever it is you're seeking won't come in the form you're expecting.

Share our similarities, celebrate our differences.

Colorless green ideas sleep furiously

There are no eternal facts, as there are no absolute truths.

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

I've never known any trouble than an hour's reading didn't assuage.

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

A person who spends more than he earns is a fool

I am a lover of truth, a worshipper of freedom, a celebrant at the altar of language and purity and tolerance.

Think globally, act locally.

Happiness is not an ideal of reason, but of imagination.

The only real mistake is the one from which we learn nothing.

There is no question climate change is happening. The only arguable point is what part humans are playing in it.