Beyond Good and Evil is a book written by the German philosopher Friedrich Nietzsche, first published in 1886.It takes up and expands on the ideas of his previous work, Thus Spoke Zarathustra, but approached from a more critical, polemical direction. In Beyond Good and Evil, Nietzsche attacks past philosophers for their alleged lack of critical sense and their blind acceptance of Christian premises in their consideration of morality. The work moves into the realm 'beyond good and evil' in the se