3. It was furthermore observed above (l.c.), that the _natural_ law was so called as being found expressed more or less perfectly in the minds of all men, and therefore being a proper element of human nature. It remains to see how much this universal natural expression amounts to. That is at once apparent from our previous explanation of _synderesis_. (s. i., nn. 5, seq., p. 139.) Not a complete and accurate knowledge of the natural law is found in all minds, far from it; but _synderesis_ is found in all. This is apparent from Mr. Grote's own phrases, "aspirations of filial sentiment," "religious obligation," "honour as a patriot," _Parents are to be honoured, we must do our duty to God and to our country_: there Hannibal was at one with the most approved teachers of morality. Callatian and Greek agreed in the recognition of the commandment, _Honour thy father and thy mother_. That was the major premiss of them both, in the moral syllogism (s. i., n. 3, p. 135), which ruled their respective consciences. Their difference was upon the _applying minor_, as it is called; the Greek regarding the dissolution of the body into its elements by fire, and so saving it from corruption, as the best means of honouring the dead: the Callatians preferring to raise their parents as it were to life again, by making them the food of their living children. Hannibal, again, had before his mind the grand principle of retribution, that wrongdoing must be expiated by suffering. But he had not heard the words "Vengeance is Mine;" and mistakenly supposed it to rest with himself to appoint and carry out his own measure of revenge. Whether he was quite so invincibly ignorant on this point, as Grote represents, is open to doubt. At any rate he was correct in the primary moral judgment on which he proceeded. _Reading_.--St. Thos., 1a 2æ, q. 94, art. 6. SECTION III.--_Of the immutability of the Natural Law_.