Outside is pure energy and colorless substance. All of the rest happens through the mechanism of our senses. Our eyes see just a small fraction of the light in the world. It is a trick to make a colored world, which does not exist outside of human beings

- Albert Hofmann


I know LSD; I don't need to take it anymore

- Albert Hofmann


Slowly I came back from a weird, unfamiliar world to reassuring everyday reality

- Albert Hofmann


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

- Albert Hofmann