Physical fitness is the first requisite of happiness. In order to achieve happiness, it is imperative to gain mastery of your body. If at the age of 30 you are stiff and out of shape, you are old. If at 60 you are supple and strong then you are young.

Patience and persistence are vital qualities in the ultimate successful accomplishment of any worthwhile endeavor.

Were man to devote as much time and energy to himself as he has devoted to that which man has produced, what astounding and unbelievable progress would be made; a progress eclipsing all he has so far successfully accomplished.

By exercising your stomach muscles, you wring out the body, you don't catch colds, you don't get cancer, you don't get hernias. Do animals get hernias? Do animals go on diets?

A man is as young as his spinal column.

You must squeeze every atom of impure air from lungs until they are almost as free of air as a vacuum.

Physical fitness is the first requisite of happiness.