We see in this book a good extension of the philosophy of Schopenhauer into a moral system. Personally I would add two formula: “be useful“ and “force yourself“ both borrowed from Harrison Ford. Nietzsche describes the true form and actuality of the Idea, a word that we must use, which enables to be truly useful: not for trite human existence but for the idea itself. Ultimately the joy of speculation makes it possible for us to motivate ourselves.