Here are some precepts or remarks which are worthy of those masters of human morality:
"The most essential of all knowledge, I mean the knowledge of the world, is never acquired without great attention, and I know a great many aged persons who, after having had an extensive acquaintance, are still mere children in the knowledge of the world."
"Human nature is the same all over the world; but its operations are so varied by education and custom that we ought to see it in all its aspects to get an intimate knowledge of it."
"Almost all men are born with every passion to some extent, but there is hardly a man who has not a dominant passion to which the others are subordinate. Discover this governing passion in every individual; search into the recesses of his heart, and observe the different effects of the same passion in different people. And when you have found the master passion of a man, remember never to trust to him where that passion is concerned."
"If you wish particularly to gain the good graces and affection of certain people, men or women, try to discover their most striking merit, if they have one, and their dominant weakness, for every one has his own, then do justice to the one, and a little more than justice to the other."
