Nietzsche is Schopenhauer's greatest student.
He is a profound pessimist whose originality is to rather madly say "Yes" to the very same world from which pessimism has always urged flight.
Reading his biography by Daniel Halevy.
Nietzsche says he is a pessimist in the preface to Human, All Too Human, Part II, aphorism 2.
He says in aphorism 1 that Schopenhauer is his greatest teacher.
He is a pessimist who rejects romanticism, he says.
A pessimist who affirms rather than rejects life.