In the ordinary course of things, how many succeed in society merely by virtue of their manners, while others, however meritorious, fail through lack of them? After all, it's only barbarians who wear uncut precious stones.

Never seem wiser, nor more learned, than the people you are with. Wear your learning, like your watch, in a private pocket: and do not merely pull it out and strike it; merely to show that you have one.

Since attaining the full use of my reason no one has ever heard me laugh.

I knew a gentleman who was so good a manager of his time that he would not even lose that small portion of it which the calls of nature obliged him to pass in the necessary-house; but gradually went through all the Latin poets in those moments.

Firmness of purpose is one of the best instruments of success.

Talk often, but never long; in that case, if you do not please, at least you are sure not to tire your hearers. Pay your own reckoning, but do not treat the whole company; this being one of the few cases in which people do not care to be treated, every one being fully convinced that he has wherewithal to pay.

Not to perceive the little weaknesses and the idle but innocent affectations of the company may be allowable as a sort of polite duty. The company will be pleased with you if you do, and most probably will not be reformed by you if you do not.