Dialogues Concerning Natural Religion is a philosophical work written by the Scot David Hume. Through dialogue, three fictional characters named Demea, Philo, and Cleanthes debate the nature of God's existence. While all three agree that a god exists, they differ sharply in opinion on god's nature or attributes and how, or if, mankind can come to knowledge of a diety.
Hume started writing the Dialogues in 1750 but did not complete them until 1776, shortly before his death. They are based partly on Cicero's de Natura Deorum. The Dialogues were published posthumously in 1779.