Jealousy is the tribute mediocrity pays to genius.

All great achievements require time.

Every act of creation is first an act of destruction.

One of the truest tests of integrity is its blunt refusal to be compromised.

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

If you have no problems, then you have no clue to what is going.

Achievement brings its own anticlimax.

Things which matter most must never be at the mercy of things which matter least.

No man has any natural authority over his fellow men.

The more that you read, the more things you will know. The more that you learn, the more places you'll go.

What can't be cured must be endured.

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

You can best serve civilization by being against what usually passes for it.

We never see ourselves as others see us.

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

If we don't believe in freedom of expression for people we despise, we don't believe in it at all.

Anger begins in folly, and ends in repentance.

In moments of great grief, that’s where you look and immerse yourself. You realise you are not immortal, you are not a god, you are part of the natural world and you come to accept that.

Don't criticize what you can't understand.

Peace is not an absence of war, it is a virtue, a state of mind, a disposition for benevolence, confidence, justice.

Kind words don't cost much. Yet they accomplish much.