We dedicate this course of esoteric education to humanity and especially to all those who are disillusioned by schools, religions, lodges, and sects. This course of intimate self-education and true practical knowledge is for them.
There are two types of knowledge: the Eye Doctrine and the Heart Doctrine.
The Eye Doctrine is for those who are satisfied with spiritual theories and the Heart Doctrine is for authentic initiates. To the Eye Doctrine belong all the members of the so-called spiritual schools, and their concepts are as variable as are the opinions of writers.