Question: Which book was written by an atheist salon owner and explicitly denies the existence of God?
Sentence (from "The System of Nature"): D'Holbach wrote and published this book – possibly with the assistance of Diderot but with the support of Jacques-André Naigeon – anonymously in 1770, describing the universe in terms of the principles of philosophical materialism: The mind is identified with brain, there is no "soul" without a living body, the world is governed by strict deterministic laws, free will is an illusion, there are no final causes, and whatever happens takes place because it inexorably must.
Relevant evidence: No