It's always too early to quit.
To know oneself, one should assert oneself.
To be a good loser is to learn how to win.
Things do not happen. Things are made to happen.
Never complain and never explain.
Wherever you are - be all there.
Know or listen to those who know.
The wise does at once what the fool does at last.
Expect problems and eat them for breakfast.
I can, therefore I am.
It is a wise man who knows where courage ends and stupidity begins.