If you think you can do it, you can.
To be a good loser is to learn how to win.
It's always too early to quit.
If you've got a talent, protect it.
The wise does at once what the fool does at last.
By failing to prepare, you are preparing to fail.
Well done is better than well said.
Be gentle to all and stern with yourself.
Begin to be now what you will be hereafter.
I can, therefore I am.
Dispassionate objectivity is itself a passion, for the real and for the truth.
If you only have a hammer, you tend to see every problem as a nail.
The story of the human race is the story of men and women selling themselves short.