Man, even now, can do wonders to animals: my cat and dog live together in my house and seem to like it. It may have been one of man's functions to restore peace to the animal world, and if he had not joined the enemy he might have succeeded in doing so to an extent now hardly imaginable.
C. S. LewisA perfect man would never act from a sense of duty; he’d always want the right thing more than the wrong one. Duty is only a substitute for love (of God and of other people) like a crutch which is a substitute for a leg. Most of us need the crutch at times; but of course it is idiotic to use the crutch when our own legs (our own loves, tastes, habits etc.) can do the journey on their own.
C. S. Lewis