Some observers believe that existentialism forms a philosophical ground for anarchism. Anarchist historian Peter Marshall (1946- ) claims "there is a close link between the existentialists' stress on the individual, free choice, and moral responsibility and the main tenets of anarchism". Anarchism and Friedrich NietzscheEgoist anarchism and Philosophy of Max Stirner Anarchism had a proto-existentialist view mainly in the writings of German individualist anarchist Max Stirner. In his book The Ego and Its Own (1845), Stirner advocates concrete individual existence, or egoism, against most commonly accepted social institutions—including the state, property as a right, natural rights in general, and the very notion of society—which he considers mere phantasms or essences in the mind. Existentialism, according to Herbert Read, "is eliminating all systems of idealism, all theories of life or being that subordinate man to an idea, to an abstraction of some sort. It is also eliminating all systems of materialism that subordinate man to the operation of physical and economic laws. It is saying that man is the reality—not even man in the abstract, but the human person, you and I; and that everything else—freedom, love, reason, God—is a contingency depending on the will of the individual. In this respect, existentialism has much in common with Max Stirner's egoism." Friedrich Nietzsche is one of the first philosophers considered fundamental to the existentialist movement, though the movement did not exist until after his death, which is when his works became better known. While he was alive, however, Nietzsche was frequently associated with anarchist movements and proved influential for many anarchist thinkers, in spite of the fact that, in his writings, he seems to hold a negative view of anarchists. This was the result of a popular association during this period between his ideas and those of Max Stirner. (See: Relationship between Friedrich Nietzsche and Max Stirner.