Walter Kaufmann wrote that Nietzsche "celebrates the Greeks who, facing up to the terrors of nature and history, did not seek refuge in 'a Buddhistic negation of the will,' as Schopenhauer did, but instead created tragedies in which life is affirmed as beautiful in spite of everything." Schopenhauer’s negation of the will was a saying "no" to life and to the world, which he judged to be a scene of pain and evil. "[D]irectly against Schopenhauer’s place as the ultimate nay-sayer to life, Nietzsche positioned himself as the ultimate yes-sayer…." Nietzsche’s affirmation of life's pain and evil, in opposition to Schopenhauer, resulted from an overflow of life. Schopenhauer’s advocacy of self-denial and negation of life was, according to Nietzsche, very harmful. For his entire mature life, Nietzsche was concerned with the damage that he thought resulted from Schopenhauerian disgust with life and turning against the world.