II. All bodily activity is caused, controlled and directed by the mind.

The truth of these propositions must now be obvious to you.  You must realize that the mind is the one instrument by which it is possible to achieve anything in life.  Your next step must be to learn how to use it.

In succeeding volumes, we shall sound the depths of the reservoir of latent mental power.  We shall find the means of tapping its resources.  And so we shall come to give you the master key to achievement and teach you how to use it with confidence and with the positive assurance of success.