What makes me so certain that the natural human lifespan is far in excess of the actual one is this. Among all my autopsies (and I have performed over 1000), I have never seen a person who died of old age. In fact, I do not think that anyone has ever died of old age yet. We invariably die because one vital part has worn out too early in proportion to the rest of the body.

The builder of the best racing car is not necessarily its best driver.

To remain healthy a man must have some goal, some purpose in life that he can respect and be proud to work for.

Even after the greatest defeats, the depressing thought of being a failure is best combated by taking stock of all your past achievements.

Leaders are leaders only as long as they have the respect and loyalty of their followers.

Stress is the spice of life.

Nothing erases unpleasant thoughts more effectively than conscious concentration on pleasant ones.