Robert M. Pirsig wrote this unpublished line in 1962 while a patient at Downey Veteran Administration Hospital in Illinois, where he was admitted as a psychiatric patient. More than a decade before the release of the book that would make him famous, Pirsig had already caught hold of the central theme that would animate Zen and the Art of Motorcycle Maintenance: Quality, a concept loosely likened to “excellence,” “rightness,” or “fitness” that Pirsig saw as kindred to the Buddhist ideas of “Dharma” or the “Tao.” As he later wrote in Zen, “Quality is Buddha.”

Though he was hounded by fans who considered him a guru, the famously private Pirsig only published two books and consented to few interviews and almost no public appearances in later decades. Yet he wrote and thought almost continually, refining his “Metaphysics of Quality” until his death in 2017.

Now for the first time, readers will be granted access to five decades of Pirsig’s personal writings in this posthumous collection that illuminates his thinking to an unprecedented degree. Skillfully edited and introduced by Wendy Pirsig, Robert’s wife of over forty years, the collection includes previously unpublished texts, speeches, letters, interviews, and private notes (including from Pirsig’s time in the mental hospital), as well as key excerpts from Zen and the Art of the Motorcycle Maintenance and his second book, Lila.

Since its publication in 1974, Zen and the Art of Motorcycle Maintenance has established itself as a modern classic of popular philosophy; selling millions of copies and transforming a generation, while serving as a perennial touchstone for the generations that follow. On Quality is a remarkable addition to the literary and philosophical canon, from one of the most influential thinkers and writers of our time.