Problems are not stop signs, they are guidelines.
Never complain and never explain.
If you think you can do it, you can.
By failing to prepare, you are preparing to fail.
It's always too early to quit.
Be kind whenever possible. It is always possible.
Always desire to learn something useful.
Be thine own palace, or the world's thy jail.
I can, therefore I am.
If you're going through hell, keep going.
I didn't feel any remorse or sympathy if I injured a rival. I went over the top a few times but I never broke anyone's leg.