some doors of perception

 

there are things known

and things unknown

and in between

are the doors

Aldous Huxley, The Doors of Perception, 1954

or Elektra Records publicist, press release, 1967

If the doors of perception were cleansed every thing would appear to man as it is, Infinite. For man has closed himself up, till he sees all things thro' narrow chinks of his cavern.

William Blake, The Marriage of Heaven and Hell

Close your eyes, close the door
You don’t have to worry anymore
I’ll be your baby tonight

Bob Dylan, I'll be your baby tonight, 1968