 Martin Heidegger has also been said to show misanthropy in his concern of the "they"—the tendency of people to conform to one view, which no one has really thought through, but is just followed because, "they say so".This might be thought of as more a criticism of conformity than of people in general.Unlike Schopenhauer, Heidegger was opposed to any systematic ethics; however, in some of his later thought, he does see the possibility of harmony between people, as part of the four-fold, mortals, gods, earth, and sky.