Stirner, Max, 1806-1856. Einzige und sein Eigentum

The Ego and Its Own (German: Der Einzige und sein Eigentum), also known as The Unique and Its Property, is an 1844 book by German philosopher Max Stirner. It presents a post-Hegelian critique of Christianity and traditional morality on one hand; and on the other, humanism, utilitarianism, liberalism, and much of the then-burgeoning socialist movement, advocating instead an amoral (although importantly not inherently immoral or antisocial) egoism. It is considered a major influence on the development of anarchism, existentialism, nihilism, and postmodernism.