Knowledge of the Higher Worlds and Its Attainment by Rudolf Steiner
There slumbers in every human being the faculties by which he can acquire for himself a knowledge of higher worlds. As long as the human race has existed there has always been a method of training in the course of which individuals who possess these higher faculties gave instructions to others who were in search of them. Such training is called occult training and the instruction given is called occult esoteric teaching. There is no difference between esoteric knowledge and all the rest of mans' knowledge, for just as all can learn to write, so too, can all learn to become esoteric students and teachers.
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