What I relate is the history of the next two centuries. I describe what is coming, what can no longer come differently: the advent of nihilism. This history can be related even now; for necessity itself is at work here. This future speaks even now in a hundred signs, this destiny announces itself everywhere; for this music of the future all ears are cocked even now. For some time now, our whole European culture has been moving as toward a catastrophe, with a tortured tension that is growing from decade to decade: restlessly, violently, headlong, like a river that wants to reach the end, that no longer reflects, that is afraid to reflect.

The Will To Power, Preface (Nov. 1887-March 1888)

http://nietzsche.holtof.com/Nietzsche_the_will_to_power/the_will_to_power_book_I.htm