Without courage, wisdom bears no fruit.

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

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

Work is the price which is paid for reputation.

There is an art, or rather a knack to flying. The knack lies in learning how to throw yourself at the ground and miss.

Wonder is the beginning of wisdom.

Muddy water is best cleared by leaving it alone.

There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self.

No matter how much suffering you went through, you never wanted to let go of those memories.

When I stand before God at the end of my life, I would hope that I would not have a single bit of talent left, and could say, 'I used everything you gave me'.

Science is organized knowledge. Wisdom is organized life.

Tact is the knack of making a point without making an enemy.

You are the bows from which your children as living arrows are sent forth.

I write with experiences in mind, but I don't write about them, I write out of them.

Immoderate desire is the mark of a child, not a man.

We may encounter many defeats but we must not be defeated.

Let him who would move the world first move himself.

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

The most certain sign of wisdom is cheerfulness.

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

I dream. Sometimes I think that's the only right thing to do.