""Flicker may prove to be a valid instrument of practical psychology: some people see and others do not. The Dreamachine with its patterns visible to the open eyes, induces people to see. The fluctuating elements of flickered design support the development of autonomous 'movies', intensely pleasurable and, possibly, instructive to the viewer."—Brion Gysin"
January 1, 1970
https://en.wikiquote.org/wiki/Dreamachine