"Intellectually as well as emotionally he (Nietzsche) needed solitude. This fact emerges, I believe, from the manner of thinking and style of writing revealed in his books, which are essentially a species of talking to oneself. … He is a man whose mind is full, overfull, of ideas; he is constantly finding ways of expressing them which, as he says in his letters, surprise and delight him; he spends much of each day walking, and at night he sits crouched over his table; and all the time he is talking to himself. He loves his own company, for with no one else can he enjoy such entertaining conversation. Sometimes he contradicts himself, but what would conversation be without contradiction? He argues, he grows angry, he laughs at himself; he postures and exposes himself as a posturer; he announces he is the freest of free-thinkers, and retorts that free-thinking is mere destructiveness. Gradually a philosophy emerges, his philosophy: none of it is of any use to anyone, no one is even interested in it; but one day — so he tells himself — mankind will open its eyes and see that a new world has been discovered."