The song is perhaps best known for its opening lines: “Timothy Leary’s dead / No, n-n-no he’s outside looking in”, which allude to Leary’s use of eastern mysticism (most notably The Tibetan Book of the Dead) to frame the psychedelic experience.
Breach for breach, eye for eye, tooth for tooth: as he hath caused a blemish in a man, so shall it be done to him again. Leviticus 24:20 KJV