Human beings have a right to change their consciousness, and it is unconscionable and absolutely wrong for any government or any person to stand in the way of someone choosing to change their consciousness.

My advice to myself and to everyone else, particularly young people, is to turn on, tune in and drop out.

I've left specific instructions that I do not want to be brought back during a Republican administration.

The mission of DNA is to evolve nervous systems capable of deciphering the mission of DNA.

Turn on, Tune in, Drop out.

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

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.