Zen and the Art of Motorcycle Maintenance is a book about Quality. Pirsig spends his time developing the idea of the raw experience, or precognitive sense of Quality that comes in through our senses and in our thoughts before they’re formed into words.
Quality and how it relate to Zen
The Analytical Knife - what we use to divide subject and object, figure out causality, and essentially do science. Lila expands more on the subject / object divide, splitting it up into a divide between types of Quality