The World is a Jungle

In short, Kant argues fro the Christian God on the basis that he must exist for eh5tics to be meaningful. Kant says that even if we cannot know that god exists, for practical purposes we must live “as if he exists for ethics and society to be possible. He anticipates Fyodor Dostoyevsky’s maxim, “If there is no God, all things are permissible.” Without an absolute ethical norm, morality is reduced to mere preference and the world is a jungle where might makes right.

R. C. Sproul, The Consequences of Ideas p. 131.