If you think you can do it, you can.
To know oneself, one should assert oneself.
Never complain and never explain.
To be a good loser is to learn how to win.
By failing to prepare, you are preparing to fail.
After a storm comes a calm.
The secret of getting ahead is getting started.
Wherever you are - be all there.
If you can dream it, you can do it.
I can, therefore I am.
They should hold themselves absolutely upon the immovable foundation of truth and nature, whereby alone they can save themselves from misapprehensions and from the danger of being entirely carried away from reality into mere dreams and fictions.