When you study natural science and the miracles of creation, if you don't turn into a mystic you are not a natural scientist.

I suddenly became strangely inebriated. The external world became changed as in a dream. Objects appeared to gain in relief; they assumed unusual dimensions; and colors became more glowing. Even self-perception and the sense of time were changed. When the eyes were closed, colored pictures flashed past in a quickly changing kaleidoscope. After a few hours, the not unpleasant inebriation, which had been experienced whilst I was fully conscious, disappeared. What had caused this condition?

It's very, very dangerous to lose contact with living nature.

It is true that my discovery of LSD was a chance discovery, but it was the outcome of planned experiments and these experiments took place in the framework of systematic pharmaceutical, chemical research. It could better be described as serendipity.

LSD is no longer playing a bad role in the drug scene and psychiatrists are again trying to submit their proposals for research with this substance to the health authorities. I hope that LSD will again become available in the normal way, for the medical profession. Then it could play the role it really should, a beneficial role.

Evolution of mankind is paralleled by the increase and expansion of consciousness.

We can study various psychic functions and also the more primitive sensory functions, such as seeing, hearing, and so on, which constitute our image of our everyday world. They have a material side and the psychic side. And that is a gap which you cannot explain.