“God is dead. God remains dead. And we have killed him. How shall we comfort ourselves, the murderers of all murderers? What was holiest and mightiest of all that the world has yet owned has bled to death under our knives: who will wipe this blood off us? What water is there for us to clean ourselves? What festivals of atonement, what sacred games shall we have to invent? Is not the greatness of this deed too great for us? Must we ourselves not become gods simply to appear worthy of it?”, F Nietzsche, 'The Gay Science' "
Nietzsche’s statement prompted several replies from his more religious opponents, and from later existentialists. Albert Camus, for example, considered the human need for higher order absurd, He argued that the “death” of God was inconsequential—that humanity had no need of a higher authority or the threat of divine wrath to live a good and moral life. Some other philosophers were less prepared to part with the concept of higher authority and instead tried to imagine an absolute morality that didn’t depend on a supreme being.