For 10 points, identify this exploration of the existence of God, a work by David Hume.
Part 10 asserts that Epicurus' "old questions are yet unanswered," while Part 7 posits a planet wholly inhabited by spiders.  In addition to citing Herbert of Cherbury's argument for the universal consent of mankind, another section references an article by Fontenelle to make the argument that "a skillful algebraist" would conclude that it is "necessity" rather than chance that explains why the products of 9 are composed of either 9 or a lesser product of 9.  J.G. Hamann notably translated this work, which is composed of 12 parts and articulated the ideas of Samuel Clarke into Gernan for Kant.  Published in 1779 and based in part on Cicero's The Nature of the Gods, it presents a series of discussions centered on Demea's and Philo's arguments against Cleanthes' deployment of "the argument from design."  For 10 points, identify this exploration of the existence of God, a work by David Hume.
Part 10 asserts that Epicurus' "old questions are yet unanswered," while Part 7 posits a planet wholly inhabited by spiders.  
Dialogues Concerning Natural Religion