L.S.D. hints to us that there is a ... an area of the mind which could be called unsane, beyond sanity, and yet not insane. Think of a circle with a fine split in it; at one end is insanity, you go around the circle to sanity and on the other end of the circle close to insanity, but not insanity, is unsanity. This is perhaps where all the superlative efforts of humanity come from, not only of art but of science, and it may be that we are ... we could approach it by a thoughtful, wise study of L.S.D.