Kennt man:

To everything turn, turn, turn
There is a season turn, turn, turn
And a time to every purpose
Under heaven
…
A time to cast away stones
A time to gather stones together
…
A time for peace
I swear it’s not too late

Pete Seeger (1950), The Byrds (1965)

„Turn on tune in drop out“
kennt man auch
(Timothy Leary 1967).