The only real mistake is the one from which we learn nothing.
It is a striving to attain the best. To throttle it would mean to stop all progress. Certain men do not need to compete. They are pioneers.
The greatest thing in life is to keep your mind young.
If there is one thing which I would banish from the earth it is fear.
Every experience is worth having.
He who believes he can and he who believes he cannot are both correct.