 In 1757 Hume published “The Natural History of Religion”, a work that proposes to identify and explain the origins and evolution of religious belief. This project follows lines of investigation and criticism that had already been laid down by a number of other thinkers, including Lucretius, Hobbes and Spinoza. Hume’s primary objective in this work is to show that the origins and foundations of religious belief do not rest with reason or philosophical arguments of any kind but with aspects of human nature that reflect our weaknesses, vulnerabilities and limitations (i.e., fear and ignorance). Related to this point, Hume also wants to show that the basic forces in human nature and psychology that shape and structure religious belief are in conflict with each other and that, as a result of this, religious belief is inherently unstable and variable. In arguing for these points, Hume is directly challenging an opposing view, one that was widely held among his own orthodox contemporaries. According to this view (e.g., as presented by Cleanthes), the evidence of God’s existence is so obvious that no one sincerely and honestly doubts it. Belief in an intelligent, invisible creator and governor of the world is a universal belief rooted in and supported by reason. From this perspective, no person sincerely accepts “speculative atheism”. Hume’s “naturalistic” approach to religion aims to discredit these claims and assumptions of theism.