'The Existence of God' is a religious essay written by François de Salignac de La Mothe- Fénelon. He argues that while metaphysical proofs of God's existence may be difficult for most people to grasp, moral proofs are more accessible to everyone, as they are present in the wisdom and power stamped upon everything in nature. Despite this, according to the author, few people pay attention to these proofs due to their worldly concerns and false prejudices. The universe itself is a testament to God's existence, as it bears the stamp of an infinitely powerful and industrious creator, and could not have been the result of chance. This book presents compelling arguments for the existence of God, drawing on comparisons from literature and music to help readers understand the complexities of the universe and the beauty of its creator.