Leap, and the net will appear.
Be thine own palace, or the world's thy jail.
To be a good loser is to learn how to win.
Things do not happen. Things are made to happen.
Quality is not an act, it is a habit.
Expect problems and eat them for breakfast.
You never know what motivates you.
By failing to prepare, you are preparing to fail.
If you're going through hell, keep going.
If you think you can do it, you can.
Beauty is the first test: there is no permanent place in the world for ugly mathematics.