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

If I speak of myself in different ways, that is because I look at myself in different ways.

I wanted to change the world. But I have found that the only thing one can be sure of changing is oneself.

Our virtues and our failings are inseparable, like force and matter. When they separate, man is no more

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

You always admire what you really don't understand.

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

I think, therefore I am.

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

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

The first thing you'll have to do, is the last thing you wished.

If you don't stand for something you will fall for anything.

Don't compromise yourself. You are all you've got.

All great achievements require time.

Experience is the only prophecy of wise men.

Man's sensitivity to the little things and insensitivity to the greatest are the signs of a strange disorder.

Men build too many walls and not enough bridges.

Nothing is as easy as it looks.

Between stimulus and response there is a space. In that space is our power to choose our response. In our response lies our growth and our freedom.

Your reputation is in the hands of others. That's what the reputation is. You can't control that. The only thing you can control is your character.

Only idiots refuse to change their minds.