Don Juan was right in saying that, by inducing a systematic displacement of the assemblage point, dreaming liberates perception, enlarging the scope of what can be perceived. For the sorcerers of his party, dreaming had not only opened the doors of other perceivable worlds but prepared them for entering into those realms in full awareness. Dreaming, for them, had become ineffable, unprecedented, something whose nature and scope could only be alluded to, as when don Juan said that it is the gateway to the light and to the darkness of the universe.