Critics have told me I've ruined the lives of 50 million young people. I can't be certain of this, since only about 10 million have ever come back to thank me.

If you don't like what you're doing, you can always pick up your needle and move to another groove.

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

LSD, wisely used by professionals, could reprogram enough nervous systems to accelerate consciousness and intelligence before we laid ourselves and our planet waste."To use your head you have to go out of your mind" "You are a God, act like one"

My favorite three words in the English language are: ’I don’t know’, because every time I say them, I learn something new.

Hippies started the ecology movement. They combated racism. They liberated sexual stereotypes, encouraged change, individual pride, and self-confidence. They questioned robot materialism. In four years they managed to stop the Vietnam War. They got marijuana decriminalized in fourteen states during the Carter Administration.

The language of God is not English or Latin; the language of God is cellular and molecular.