If you think you can do it, you can.
To be a good loser is to learn how to win.
Either you run the day or the day runs you.
It's always too early to quit.
What you do today can improve all your tomorrows.
Never complain and never explain.
Expect problems and eat them for breakfast.
Be gentle to all and stern with yourself.
If you've got a talent, protect it.
I can, therefore I am.
Though I had success in my research both when I was mad and when I was not, eventually I felt that my work would be better respected if I thought and acted like a 'normal' person.