I can, therefore I am.

Quality is not an act, it is a habit.

If you think you can do it, you can.

Be thine own palace, or the world's thy jail.

Well done is better than well said.

It's always too early to quit.

Things do not happen. Things are made to happen.

Do not weep do not wax indignant. Understand.

Expect problems and eat them for breakfast.