" A man knows, not only that he now is, but also that there was a time when he did not exist; consequently there must have been a cause. But we can only infer, from effects, causes exactly adequate to those effects. There certainly is a generative power which is effected by particular instruments; we cannot prove that it is inherent in these instruments, nor is the contrary hypothesis capable of demonstration. We admit that the generative power is incomprehensible, but to suppose that the same effects are produced by an eternal Omnipotent and Omniscient Being, leaves the cause in the same obscurity, but renders it more incomprehensible. "

― Christopher Hitchens , The Portable Atheist: Essential Readings for the Nonbeliever