With the share of knowledge which you have already gotten, and with the much greater which I hope you will soon acquire, what may you not expect to arrive at, if you join all these graces to it? In your destination particularly, they are in truth half your business: for, if you once gain the affections as well as the esteem of the prince or minister of the court to which you are sent, I will answer for it, that will effectually do the business of the court that sent you; otherwise it is up-hill work. Do not mistake, and think that these graces which I so often and so earnestly recommend to you, should only accompany important transactions, and be worn only ‘les jours de gala’; no, they should, if possible, accompany every, the least thing you do or say; for, if you neglect them in little things, they will leave you in great ones. I should, for instance, be extremely concerned to see you even drink a cup of coffee ungracefully, and slop yourself with it, by your awkward manner of holding it; nor should I like to see your coat buttoned, or your shoes buckled awry. But I should be outrageous, if I heard you mutter your words unintelligibly, stammer, in your speech, or hesitate, misplace, and mistake in your narrations; and I should run away from you with greater rapidity, if possible, than I should now run to embrace you, if I found you destitute of all those graces which I have set my heart upon their making you one day, ‘omnibus ornatum excellere rebus’.
This subject is inexhaustible, as it extends to everything that is to be said or done: but I will leave it for the present, as this letter is already pretty long. Such is my desire, my anxiety for your perfection, that I never think I have said enough, though you may possibly think that I have said too much; and though, in truth, if your own good sense is not sufficient to direct you, in many of these plain points, all that I or anybody else can say will be insufficient. But where you are concerned, I am the insatiable man in Horace, who covets still a little corner more to complete the figure of his field. I dread every little corner that may deform mine, in which I would have (if possible) no one defect.