My advice to people today is as follows: if you take the game of life seriously, if you take your nervous system seriously, if you take your sense organs seriously, if you take the energy process seriously, you must turn on, tune in, and drop out.

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.

My advice to people today is as follows: if you take the game of life seriously, if you take your nervous system seriously, if you take your sense organs seriously, if you take the energy process seriously, you must turn on, tune in, and drop out.

Intelligence is the ultimate aphrodisiac

In the information age, you don't teach philosophy as they did after feudalism. You perform it. If Aristotle were alive today he'd have a talk show.

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

At one point consciousness-altering devices like the microscope and telescope were criminalized for exactly the same reasons that psychedelic plants were banned in later years. They allow us to peer into bits and zones of Chaos.