In this, one of the strangest books about writing and language you're likely ever to read, fiction writer and philosophy professor Gass spins off into an improvisational inquiry into the nature of words and consciousness, using as his departure point the concept of the color blue--the idea of blue, the state of blue, the uses of blue...the bluenesses of blue. It's kind of hard to sum up, and if it sounds weird, it is--but it's also wonderful.
Used availability for William H Gass's On Being Blue