"Lila: An Inquiry into Morals" is a philosophical novel by Robert M. Pirsig, published in 1991. It follows the journey of Phaedrus, the protagonist, as he navigates his thoughts on morality while traveling on a boat down the Mississippi River. The narrative explores the nature of values and the concept of quality, contrasting different moral frameworks. The book serves as a sequel to Pirsig's earlier work, Zen and the Art of Motorcycle Maintenance, and delves deeper into the philosophical ideas introduced there. Through Lila, a character who embodies various moral dilemmas, Pirsig examines how personal experiences shape ethical beliefs and the complexities of human relationships.