You must look into people, as well as at them.

This is the day when people reciprocally offer, and receive, the kindest and the warmest wishes, though, in general, without meaning them on one side, or believing them on the other. They are formed by the head, in compliance with custom, though disavowed by the heart, in consequence of nature.

If you would convince others, seem open to conviction yourself.

If you can once engage people's pride, love, pity, ambition (or whatever is their prevailing passion) on your side, you need not fear what their reason can do against you.

Manners must adorn knowledge and smooth its way through the world.

Endeavor, as much as you can, to keep company with people above you.... Do not mistake, when I say company above you, and think that I mean with regard to their birth; that is the least consideration; but I mean with regard to their merit, and the light in which the world considers them.

Men have various subjects in which they may excel, or at least would be thought to excel, and though they love to hear justice done to them where they know they excel, yet they are most and best flattered upon those points where they wish to excel and yet are doubtful whether they do or not.