It's much easier to stay out of trouble now than to get out of trouble later.

Wisdom is knowing what you don't know.

Knowing thyself is the height of wisdom.

It's good to learn from your mistakes. It's better to learn from other people's mistakes.

Don't risk what is important to you, to get what is not important to you.

Everybody's got a different circle of competence. The important thing is not how big the circle is. The important thing is staying inside the circle.