Edad recomendada: Adultos CHARLES F. HAANEL (22 de mayo de 1866 - 27 de noviembre de 1949) fue un escritor y hombre de negocios estadounidense. Es conocido por su contribución al movimiento del Nuevo Pensamiento a través de su obra The Master Key System. SINOPSIS The Master Key System is a personal development book that was originally published as a correspondence course in 1912 and along with "The Science of Getting Rich", by Wallace D. Wattles, are the source of Rhonda Byrne's inspiration for the book and the film "The Secret". "The Master Key System" describes how one can use the law of attraction to creatively visualize a better life for oneself. As Haanel describes in his introduction to the "The Master Ke