Envy and jealousy are the private parts of the human soul. Perhaps the comparison can be extended.
Friedrich NietzscheI go in solitude, so as not to drink out of everybody's cistern. When I am among the many I live as the many do, and I do not think I really think; after a time it always seems as if they want to banish myself from myself and rob me of my soul.
Friedrich NietzscheSince Copernicus, man seems to have got himself on an inclined plane-now he is slipping faster and faster away from the center into-what? into nothingness? into a 'penetrating sense of his nothingness?' ... all science, natural as well as unnatural-which is what I call the self-critique of knowledge-has at present the object of dissuading man from his former respect for himself, as if this had been but a piece of bizarre conceit.
Friedrich Nietzsche