one of my correspondents makes you the true French compliment of saying, ‘F’ose vous promettre qu’il sera bientot comme un de nos autres’.  However unbecoming this speech may be in the mouth of a Frenchman, I am very glad that they think it applicable to you; for I would have you not only adopt, but rival, the best manners and usages of the place you are at, be they what they will; that is the versatility of manners which is so useful in the course of the world.  Choose your models well at Paris, and then rival them in their own way.  There are fashionable words, phrases, and even gestures, at Paris, which are called ‘du bon ton’; not to mention ’certaines Petites politesses et attentions, qui ne sont rien en elle-memes’, which fashion has rendered necessary.  Make yourself master of all these things; and to such a degree, as to make the French say, ‘qu’on diroit que c’est un Francois’; and when hereafter you shall be at other courts, do the same thing there; and conform to the fashionable manners and usage of the place; that is what the French themselves are not apt to do; wherever they go, they retain their own manners, as thinking them the best; but, granting them to be so, they are still in the wrong not to conform to those of the place.  One would desire to please, wherever one is; and nothing is more innocently flattering than an approbation, and an imitation of the people one converses with.

I hope your colleges with Marcel go on prosperously.  In these ridiculous, though, at the same time, really important lectures, pray attend, and desire your professor also to attend, more particularly to the chapter of the arms.  It is they that decide of a man’s being genteel or otherwise, more than any other part of the body.  A twist or stiffness in the wrist, will make any man in Europe look awkward.  The next thing to be attended to is, your coming into a room, and presenting yourself to a company.  This gives the first impression; and the first impression is often a lasting one.  Therefore, pray desire Professor Marcel to make you come in and go out of his room frequently, and in the supposition of different companies being there; such as ministers, women, mixed companies, etc.  Those who present themselves well, have a certain dignity in their air, which, without the least seeming mixture of pride, at once engages, and is respected.

I should not so often repeat, nor so long dwell upon such trifles, with anybody that had less solid and valuable knowledge than you have.  Frivolous people attend to those things, ‘par preference’; they know nothing else; my fear with you is, that, from knowing better things, you should despise these too much, and think them of much less consequence than they really are; for they are of a great deal, and more especially to you.