All psychedelic explorers should be aware of the concept of what is called a cognitive hallucination. The is a much more insidious phenomenon. This is, quite simply, an out-and-out delusion.
Terence McKennaThere is no dualism in the world of light. The conventions of relativity say that time slows down as one approaches the speed of light, but if one tries to imagine the point of view of a thing made of light, one must realize that what is never mentioned is that if one moves at the speed of light there is no time whatsoever... One exists in eternity, one has become eternal... One is then apart from the moving image; one exists in the completion of eternity.
Terence McKennaThis is where I think the psychedelics come in because they are anticipations of the future. They seem to channel information that is not strictly governed by the laws of normal causality. So that there really is a prophetic dimension, a glimpse of the potential of the far centuries of the future through these compounds.
Terence McKenna