The Road is Made by Walking
Antonio Machado was one of the most profound poets writing in the Spanish language. A member of the Spanish literary movement known as the Generation of '98, his work evolved from an early modernism to a very personal form of symbolism. Tinged with melancholy and pessimism, his writing considered the destiny of man, the history of Spain and the contradictions between our illusions and reality.
Man: The Imperfect Librarian
I’m not particularly fond of quoting United States Defense Secretaries, but Donald Rumsfeld's attempt in 2002 to articulate a theory of knowledge is actually quite interesting: “There are known knowns. These are things we know that we know. There are known unknowns. That is to say, there are things that we know we don't know….”