Immanuel Kant, in his Religion Within the Limits of Reason Alone, observes that we create a God for ourselves. This essay will argue that, in this passage as in Religion as a whole, Kant is attempting to find a justification for religious thought and moral behaviour, not in revelation, but in reason. Reinforced by reason, a universal human morality may therefore be agreed upon which is not bound by the limits of culture or individual religious theology.