One of the keys to happiness is a bad memory.
It is impossible to walk rapidly and be unhappy.
Sometimes when you innovate, you make mistakes. It is best to admit them quickly, and get on with improving your other innovations.
Your parents, they give you your life, but then they try to give you their life.
There is still a difference between something and nothing, but it is purely geometrical and there is nothing behind the geometry.
There is no revenge so complete as forgiveness.
A boy can learn a lot from a dog: obedience, loyalty, and the importance of turning around three times before lying down.