Relation to SchopenhauerAccording to Santayana, Nietzsche considered his philosophy to be a correction of Schopenhauer’s philosophy. In his http://archive.org/details/cu31924082445465 Egotism in German Philosophy, Santayana listed Nietzsche’s antithetical reactions to Schopenhauer.
The will to live would become the will to dominate; pessimism founded on reflection would become optimism founded on courage; the suspense of the will in contemplation would yield to a more biological account of intelligence and taste;These emendations show how Schopenhauer’s philosophy was not a mere initial stimulus for Nietzsche, but formed the basis for much of Nietzsche’s thinking.
finally in the place of pity and asceticism (Schopenhauer’ s two principles of morals) Nietzsche would set up the duty of asserting the will at all costs and being cruelly but beautifully strong.
These points of difference from Schopenhauer cover the whole philosophy of Nietzsche.