“We do not know what the unicorn looks like.”
Book of Imaginary Beings (1957), as translated by Norman Thomas di Giovanni
Context: It is universally held that the unicorn is a supernatural being and of auspicious omen; so say the odes, the annals, the biographies of worthies, and other texts whose authority is unimpeachable. Even village women and children know that the unicorn is a lucky sign. But this animal does not figure among the barnyard animals, it is not always easy to come across, it does not lend itself to zoological classification. Nor is it like the horse or bull, the wolf or deer. In such circumstances we may be face to face with a unicorn and not know for sure that we are. We know that a certain animal with a mane is a horse and that a certain animal with horns is a bull. We do not know what the unicorn looks like.
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Jorge Luis Borges 213
Argentine short-story writer, essayist, poet and translator… 1899–1986Related quotes

Source: Alice's Adventures In Wonderland And Through The Looking Glass
Source: Two Hundred Million Americans in Search of a Government (1969), p. 35

“Keys to getting things done: know what "done" means & what "doing" looks like.”
14 January 2012 https://twitter.com/gtdguy/status/158292486358446081
Official Twitter profile (@gtdguy) https://twitter.com/gtdguy

“I just want to know the last time you saw a unicorn and do you still believe in primeval forests.”
Living, Loving, and Learning (1982)
Context: I have a lot of things in my classes that I call "voluntarily mandatory." One of the things that is voluntarily mandatory is that every student come to see me in my office at least once. I cannot teach bodies. I can only relate to people. And so I say, "Come in, and we will sit across from one another. I don't want to talk about the texts or the class. We can do that another time. I just want to know the last time you saw a unicorn and do you still believe in primeval forests. And when you come, I am going to touch you — and if that bothers you, take your tranquilizer." It is amazing how many are intimidated by someone who says, "I want to touch you." I was raised in a large Italian family, as most of you know, and everybody hugs everybody all the time. On holidays everyone gets together, and it takes forty-five minutes just to say hello and forty-five minutes to say goodbye. Babies, parents, dogs — everyody's got to be loved! And so I have never suffered that existential feeling of not being. If someone can hug you and not go through you, you are. Try it sometime.
“They do not see what they look at, hence they know not what they do.”
Source: Echoes from the Bottomless Well (1985), p. 124

Letter to Oskar Pollak (8 November 1903); cited from Briefe, 1902-1924 (1958) edited by [Max Brod]], p. 27<!-- New York: Schocken --> ; translation from Franz Kafka, Representative Man (1991) by Frederick R. Karl, p. 98 <!-- New York: Ticknor & Fields -->
Context: We are as forlorn as children lost in the woods. When you stand in front of me and look at me, what do you know of the griefs that are in me and what do I know of yours? And if I were to cast myself down before you and weep and tell you, what more would you know about me than you know about Hell when someone tells you it is hot and dreadful? For that reason alone we human beings ought to stand before one another as reverently, as reflectively, as lovingly, as we would before the entrance to Hell.

Documentary films, 2016: Obama's America (2012)

As quoted in Walden (1854) by Henry David Thoreau, Ch. 1
Attributed