I've learned that you can't control what other people say about you, but you can control how you react to it.
The process of discovery in mathematics is often more important than the result itself.
"A novel is a long piece of prose with something wrong with it."
Nowadays, particularly in the United States, if you meet someone at the bottom of society, they may unkindly be described as a "loser." There's a real difference between an unfortunate and a loser, and that shows 400 years of evolution in society and our belief in who is responsible for our lives. It's no longer the gods, it's us. We're in the driving seat.