It was for a long time imagined by the Romans, that no son could be the murderer of his father; and they had therefore no punishment appropriated to parricide. They seem likewise to have believed with equal confidence, that no father could be cruel to his child; and therefore they allowed every man the supreme judicature in his own house, and put the lives of his offspring into his hands. But experience informed them by degrees, that they determined too hastily in favour of human nature; they found that instinct and habit were not able to contend with avarice or malice; that the nearest relation might be violated; and that power, to whomsoever intrusted, might be ill employed. They were therefore obliged to supply and to change their institutions; to deter the parricide by a new law, and to transfer capital punishments from the parent to the magistrate. There are indeed many houses which it is impossible to enter familiarly, without discovering that parents are by no means exempt from the intoxications of dominion; and that he who is in no danger of hearing remonstrances but from his own conscience, will seldom be long without the art of controling his convictions, and modifying justice by his own will. If in any situation the heart were inaccessible to malignity, it might be supposed to be sufficiently secured by parental relation. To have voluntarily become to any being the occasion of its existence, produces an obligation to make that existence happy. To see helpless infancy stretching out her hands, and pouring out her cries in testimony of dependence, without any powers to alarm jealousy, or any guilt to alienate affection, must surely awaken tenderness in every human mind; and tenderness once excited will be hourly increased by the natural contagion of felicity, by the repercussion of communicated pleasure, by the consciousness of the dignity of benefaction. I believe no generous or benevolent man can see the vilest animal courting his regard, and shrinking at his anger, playing his gambols of delight before him, calling on him in distress, and flying to him in danger, without more kindness than he can persuade himself to feel for the wild and unsocial inhabitants of the air and water. We naturally endear to ourselves those to whom we impart any kind of pleasure, because we imagine their affection and esteem secured to us by the benefits which they receive.