The savage, when he speaks of a spirit, affixes, at least, some idea to the word; he means thereby an agent, like the air, the breeze, the breath, that invisibly produces discernible effects. By subtilizing every thing, the modern theologian becomes as unintelligible to himself as to others. Ask him, what he understands by a spirit? He will answer you, that it is an unknown substance, perfectly simple, that has no extension, that has nothing common with matter. Indeed, is there any one, who can form the least idea of such a substance? What then is a spirit, to speak in the language of modern theology, but the absence of an idea? The idea of spirituality is an idea without model.