Having a great intellect is no path to being happy.

Don't raise your voice, improve your argument.

The most certain sign of wisdom is cheerfulness.

What a man does for others, not what they do for him, gives him immortality.

Time flies over us, but leaves its shadow behind.

You can be rich in spirit, kindness, love and all those things that you can't put a dollar sign on.

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

Experience keeps a dear school, but fools will learn in no other.

I believe that one defines oneself by reinvention. To not be like your parents. To not be like your friends. To be yourself. To cut yourself out of stone.

Thoughts without content are empty, intuitions without concepts are blind.

Everything we hear is an opinion, not a fact. Everything we see is a perspective, not the truth.

Don't take tomorrow to bed with you.

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

To avoid criticism say nothing, do nothing, be nothing.

Courage, above all things, is the first quality of a warrior.

The ultimate authority must always rest with the individual's own reason and critical analysis.

Compassion is the basis of morality.

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

The boundaries which divide Life from Death are at best shadowy and vague. Who shall say where the one ends, and where the other begins?

All differences in this world are of degree, and not of kind, because oneness is the secret of everything.

Language is very powerful. Language does not just describe reality. Language creates the reality it describes.