1927. An interesting read from Haanel, the founder of the Master Key System, explaining his theory of how all form is a vibratory activity. Contents: Planetary Vibrations; Solar Vibrations; Mental Vibrations; Electrical Vibrations; Celestial Vibrations; Cosmic Vibrations; Light Vibrations; Sound Vibrations; Color Vibrations; Heat Vibrations; Periodicity; The Source of Life; The Emotions; Magnetism; The Imagination; and Destiny. See other titles by this author available from Kessinger Publishing.