What does not kill me, makes me stronger.” Most people do not know the origin, of this very popular quote. It can be found in German philosopher Friedrich Nietzsche’s 1888 book, Twilight of the Idols (German: Götzen-Dämmerung). Friedrich Nietzsche is known to have suffered much pain in his life; both physically and psychologically. So, in a way, Nietzsche earned the right to comment on the life experience of pain.