Beyond talent lie all the usual words: discipline, love, luck -- but, most of all, endurance.

Praise is like sunlight to the human spirit: we cannot flower and grow without it.

Good management is the art of making problems so interesting and their solutions so constructive that everyone wants to get to work and deal with them.

Honor has not to be won; it must only not be lost.

Where there is an open mind there will always be a frontier.

What you cannot enforce, do not command.

You begin saving the world by saving one person at a time; all else is grandiose romanticism or politics.

To find fault is easy; to do better may be difficult.

The mediocre teacher tells. The good teacher explains. The superior teacher demonstrates. The great teacher inspires.

A mediocre idea that generates enthusiasm will go further than a great idea that inspires no one.