"Being without Being is blue."

In a logic class, the professor uses the blueness of the sky to represent a truth dependent on something outside of the sentence, or a posteriori. Some analytic philosophy classes beg the students to define blue, explaining a color to a person who has never known anything.

Anyway.

The definition of blue does not seem to actually matter to our existence too much, but the sensation of color is a ragged part of living. I’ve read two books about the color blue; when I was in college, I read “Bluets” by Maggie Nelson and more recently, “On Being Blue” by William Gass. Gass is a philosopher educated...