To say that a thing is imaginary is not to dispose of it in the realm of mind, for the imagination, or the image making faculty, is a very important part of our mental functioning. An image formed by the imagination is a reality from the point of view of psychology; it is quite true that it has no physical existence, but are we going to limit reality to that which is material? We shall be far out of our reckoning if we do, for mental images are potent things, and although they do not actually exist on the physical plane, they influence it far more than most people suspect.
Dion FortuneThe man who is an initiate of one of the great Mystery Schools never fears to let his pupils outdistance him, because he knows that it stands him in good stead with his superiors if he is constantly sending up to them aspirants who 'make good.' He therefore never tries to hold back a promising pupil, because he has no need to fear that pupil, if allowed to penetrate into the Mysteries, would spy out the nakedness of the land; he will rather bring back a report of its exceeding richness, and thereby confirm the statements of his teacher and spur his fellow pupils to yet greater eagerness.
Dion Fortune