 These nomadic years were the occasion of Nietzsche’s main works, among which are Daybreak (1881), The Gay Science (1882/1887), Thus Spoke Zarathustra (1883–85), Beyond Good and Evil (1886), and On the Genealogy of Morals (1887). Nietzsche’s final active year, 1888, saw the completion of The Case of Wagner (May-August 1888), Twilight of the Idols (August-September 1888), The Antichrist (September 1888), Ecce Homo (October-November 1888) and Nietzsche Contra Wagner (December 1888).