“If you can’t explain it simply, you don’t understand it well enough.”

The secret of joy in work is contained in one word excellence. To know how to do something well is to enjoy it

Envy is the ulcer of the soul.

Keep your face always toward the sunshine And shadows will fall behind you.

Nature is painting for us, day after day, pictures of infinite beauty if only we have the eyes to see them.

Toleration is the greatest gift of the mind; it requires the same effort of the brain that it takes to balance oneself on a bicycle.

Winning isn't everything, but it beats anything that comes in second.