I am 100 percent in favor of the intelligent use of drugs, and 1,000 percent against the thoughtless use of them, whether caffeine or LSD. And drugs are not central to my life.

Think for yourself and question authority.

There are three side effects of acid: enhanced long-term memory, decreased short-term memory, and I forget the third.

The brain is not a blind, reactive machine, but a complex, sensitive biocomputer that we can program. And if we don't take the responsibility for programming it, then it will be programmed unwittingly by accident or by the social environnement.

My advice to myself and to everyone else, particularly young people, is to turn on, tune in and drop out. By drop out, I mean to detach yourself from involvement in secular, external social games. But the dropping out has to occur internally before it can occur externally. I'm not telling kids just to quit school; I'm not telling people to quit their jobs. That is an inevitable development of the process of turning on and tuning in.

The danger of psychedelic drugs, the danger of mind-opening, the danger of consciousness expansion, the danger of inner discovery is a danger to the establishment.