The Master Key System and Mental Chemistry

The Master Key System and Mental Chemistry, two classics of metaphysical literature by Charles F. Haanel. Originally published as a series of weekly lessons mailed to subscribing students, these two books present methods for transforming your life by controlling and transforming your mental and emotional energies and utilizing the powers latent within the human body. The material in these books was long guarded by monasteries and secret societies and made available only to initiates of those orders. Mr. Haanel brought this to the general public, knowing there were many individuals who were longing for such knowledge.