While Russell rejects all proofs for the existence of God, Voltaire rejects only the ontological argument. He maintains that we know God only by His effects, we cannot know Him by his nature, which is inscrutable to human reason; thus he urges men to adore God without wishing to ‘pierce the obscurity of His mysteries.’

While rejecting revealed religion, he claims that the rational man need only open his eyes to nature to perceive God for ‘all is art in the universe, and art announces an Artisan.’

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