Rudolf Steiner,
An Outline of Occult Science
“ The conditions here described must be fulfilled, because supersensible experience is built upon the foundation on which the student stands in his ordinary soul-life, before he enters the supersensible world. In a two-fold way, all supersensible experience is dependent upon the soul's point of departure before entering that world. One who is not intent, from the outset, on making sound powers of judgment the foundation of his spiritual training will develop supersensible capacities which perceive the spiritual world inaccurately and incorrectly. ”
