Illusion, for our purposes, can be understood to signify the reaction of the undisciplined mind to the newly contacted world of ideas. This contact opens up from the moment a man has aligned himself and brought the lower nature into touch with the higher. Ideas come to us from the plane of the intuition. The soul illumines the plane of the mind and the plane of the intuition so that they stand revealed to each other and their mutual relationship becomes then apparent. The mind of the man (which is slowly becoming the centre of his consciousness and the major reality in his existence) becomes aware of this new and undiscovered world of ideas and he seizes upon some idea or group of ideas and endeavours to make them his own. At first, with the majority of people and especially with the average mystical type, the appreciation of ideas is vague and nebulous, and frequently is arrived at from a second-hand angle. The illumination, coming through the medium of the feebly established soul contact, seems to the unaccustomed neophyte to be of a supreme wonder and of vital moment. The ideas contacted appear to him of great marvel, and superbly unusual, and vitally needed by humanity.
But the mind is still self-centred, the contact feeble and the alignment uncertain. The ideas are therefore only dimly sensed. But the uniqueness of the experience in the realised content of the mind of the disciple leads him deep into the realm of illusion. The idea, or ideas, which he has contacted are, if he could realise, only a fragment of a far greater Whole. That which he brings to their interpretation is inadequate. The idea which has emerged in his consciousness, through the partial awakening of his intuition, will be distorted in its descent to his brain consciousness in several ways. (
Glamour: A World Problem, pp. 54-55)