Know or listen to those who know.
To be a good loser is to learn how to win.
What you do today can improve all your tomorrows.
Begin to be now what you will be hereafter.
Wherever you are - be all there.
Never complain and never explain.
Be kind whenever possible. It is always possible.
If you're going through hell, keep going.
The wise does at once what the fool does at last.
Leap, and the net will appear.
A teacher must believe in the value and interest of his subject as a doctor believes in health.
A good teacher is a determined person.