Begin to be now what you will be hereafter.
Never complain and never explain.
To be a good loser is to learn how to win.
Leap, and the net will appear.
I can, therefore I am.
Be gentle to all and stern with yourself.
Things do not happen. Things are made to happen.
Be thine own palace, or the world's thy jail.
Either you run the day or the day runs you.
Expect problems and eat them for breakfast.
Imagination is as vital to any advance in science as learning and precision are essential for starting points.