"Heaven goes by favor; if it went by merit, you would stay out and your dog would go in."
"...man interferes with the dog and makes it more loveable than it was in mere nature. In its state of nature it has a smell, and habits, which frustrate man’s love: he washes it, house-trains it, teaches it not to steal, and is so enabled to love it completely. To the puppy the whole proceeding would seem, if it were a theologian, to cast grave doubts on the “goodness” of man: but the full-grown and full-trained dog, larger, healthier, and longer-lived than the wild dog, and admitted, as it were by Grace, to a whole world of affections, loyalties, interests and comforts entirely beyond its animal destiny, would have no such doubts. It will be noted that the man takes all these pains with the dog, and gives all these pains to the dog, only because it is an animal high in the scale - because it is so nearly loveable that it is worth his while to make it fully loveable. He does not house-train the earwig or give baths to centipedes. We may wish, indeed, that we were of so little account to God that He left us alone to follow our natural impulses - that He would give over trying to train us into something so unlike our natural selves: but once again, we are asking not for more Love, but for less."
(C. S. Lewis)