But where does this come from?
How do the great minds generate this glorious means of self-propulsion?
The answer is that _in a healthy body it is inherent_ from birth, and proper care of the body therefore accentuates within their minds the will to do.
If the preceding chapters have been carefully read we may readily believe that the successful youth must start with a wholesome, generous viewpoint, a good constitution, and a clean mind.

We have had an inkling by this time of what one must do to achieve success in a world where competition is keen.

We are beginning to realize that these matters are of vital importance and that we are face to face with a problem.
Energy is the natural outpouring of a healthy body.

It must be directed, it must be controlled, the same as any other living force.

Not only is it a positive necessity to the winner, but it must grow and become _a natural quality_.