“There's a door."
"Where does it go?"
"It stays where it is, I think.”

Source: A Field Guide to Getting Lost

"Mi Ultimo Adios" st. 13 - poem written on the eve of his execution (29 December 1896) - translated from the Spanish by Charles Derbyshire.

A Factless Autobiography, Richard Zenith Edition, Lisbon, 2006, p. 40
The Book of Disquiet
Original: Considero a vida uma estalagem onde tenho que me demorar até que chegue a diligência do abismo. Não sei onde ela me levará, porque não sei nada.

Source: My Name Is Memory

Source: The Power of Myth (book), p. 120
Context: Moyers: Do you ever have the sense of... being helped by hidden hands?
Campbell: All the time. It is miraculous. I even have a superstition that has grown on me as a result of invisible hands coming all the time — namely, that if you do follow your bliss you put yourself on a kind of track that has been there all the while, waiting for you, and the life that you ought to be living is the one you are living. When you can see that, you begin to meet people who are in your field of bliss, and they open doors to you. I say, follow your bliss and don't be afraid, and doors will open where you didn't know they were going to be.

Libby Houston, in the poem "Gold" in Necessity (1988).
Misattributed