Beyond Good and Evil is a book by philosopher Friedrich Nietzsche that expands the ideas of his previous work Thus Spoke Zarathustra with a more critical and polemical approach. It was first published in 1886.
Friedrich Wilhelm Nietzsche (15 October 1844 – 25 August 1900) was a German philosopher, cultural critic, composer, poet, and philologist whose work has exerted a profound influence on modern intellectual history. He began his career as a classical philologist before turning to philosophy.