Pantheism identifies man with Nature, whether with its visible appearances, or its abstract essence. Personalism isolates, separates him from Nature; converts him from a part into the whole, into an absolute essence of himself. This is the distinction. If, therefore, you would be clear on these subjects, exchange your mystical, perverted anthropology, which you call theology, for real anthropology, and speculate in the light of consciousness and Nature concerning the difference or identity of the human essence with the essence of Nature. You yourselves admit that the essence of the pantheistical God is nothing but the essence of Nature. Why, then, will you only see the mote in the eyes of your opponents, and not observe the very obvious beam in your own eyes? Why make yourselves an exception to a universally valid law? Admit that your personal God is nothing else than your own personal nature, that while you believe in and construct your supra- and extra- natural God, you believe in and construct nothing else than the supra- and extra- naturalism of your own self (Ludwig Feuerbach, The Essence of Christianity, page 107-108).