Able writers have sometimes ridiculed the precept, "Follow nature," which means the laws of human nature, not perceiving that they were the necessary foundation of morals. "The way to be happy," says the philosopher in Rasselas, "is to live according to nature, in obedience to that universal, and unalterable law, with which every heart is originally impressed." "Sir," answers the prince, "I doubt not the truth of a position which a man so learned has so confidently advanced. Let me only know what it is to live according to nature." The philosopher replies in unintelligible jargon, and Johnson adds, "The prince soon found that this was one of the sages whom he should understand less as he heard him longer."[928] The unreflecting disdain shows poorly by the side of Butler's comment on the maxim. "The ancient moralists," he said, "had some inward feeling or other, which they chose to express in this manner, that man is born to virtue, that it consists in following nature, and that vice is more contrary to this nature than tortures or death. They had a perception that injustice was contrary to their nature, and that pain was so also. They observed these two perceptions totally different, not in degree, but in kind, and the reflecting upon each of them, as they thus stood in their nature, wrought a full intuitive conviction that more was due, and of right belonged to one of these inward perceptions than to the other; that it demanded in all cases to govern such a creature as man."[929] Apart from revelation we can have no other knowledge of morality than nature affords. Honestly interrogated nature does not put us off with unmeaning ambiguities. As we learn through our appetites that we are intended to eat and drink, so a higher faculty informs us that we are to govern our appetites, and the whole of our being, by the supreme principles we call duty. Every time we have a consciousness that our conduct is right or wrong, every time we condemn or applaud the vice and virtue of our fellow men, every time the law enforces justice and punishes injustice, we confess that duty is in accordance with nature. The precept, "follow nature," is the rational injunction to contemplate virtue in its inner source that we may see it in its purity, and recognise its right to supremacy. If Pope had kept to the precept, and remembered that for parents intentionally to train up children in iniquity is the height of infamy, he would hardly have imagined that "the Deity poured fierce ambition into Cæsar's mind." If he had reflected that we condemn follies and vanities, he would not have supposed that they were a provision of the Deity for our comfort. If he had consulted conscience, and noticed that it instructs us to love good in itself as well as our own good, to love God and our neighbour as an end as well as a means, he would not have taught that the motive to virtue was unmingled selfishness. If he had been at the trouble to