Answer
Dialogus, one of William of Ockham's major works, is a philosophical treatise that critiques the metaphysical and theological ideas of his time. Ockham's famous "razor," which states that entities should not be multiplied beyond necessity, is a central theme in the Dialogus. Through a series of dialogues, Ockham argues against the existence of universals, the necessity of positing a first cause, and the idea that God's will is arbitrary.