Friedrich Nietzsche Heidegger absorbed it and made it their own. It shaped their philosophical and cultural endeavor, as well as their political understanding. Weber, for example, relies on Nietzsche's perspectivism by maintaining that objectivity is still possible—but only after a particular perspective, value, or end has been established. Among his critique of traditional philosophy of Kant, Descartes and Plato in "Beyond Good and Evil", Nietzsche attacked "thing in itself" and "cogito ergo sum" ("I think, therefore I am") as unfalsifiable beliefs based on naive acceptance of previous notions and fallacies. Philosopher Alasdair MacIntyre puts Nietzsche in a high place in the history
Cogito, ergo sum "Meditations", Descartes phrases the conclusion of the argument as "that the proposition, "I am, I exist," is necessarily true whenever it is put forward by me or conceived in my mind." ("Meditation" II) At the beginning of the second meditation, having reached what he considers to be the ultimate level of doubt—his argument from the existence of a deceiving god—Descartes examines his beliefs to see if any have survived the doubt. In his belief in his own existence, he finds that it is impossible to doubt that he exists. Even if there were a deceiving god (or an evil demon),