There is nothing so delicate as your moral character, and nothing which it is your interest so much to preserve pure.  Should you be suspected of injustice, malignity, perfidy, lying, etc., all the parts and knowledge in the world will never procure you esteem, friendship, or respect.  A strange concurrence of circumstances has sometimes raised very bad men to high stations, but they have been raised like criminals to a pillory, where their persons and their crimes, by being more conspicuous, are only the more known, the more detested, and the more pelted and insulted.  If, in any case whatsoever, affectation and ostentation are pardonable, it is in the case of morality; though even there, I would not advise you to a pharisaical pomp of virtue.  But I will recommend to you a most scrupulous tenderness for your moral character, and the utmost care not to say or do the least thing that may ever so slightly taint it.  Show yourself, upon all occasions, the advocate, the friend, but not the bully of virtue.  Colonel Chartres, whom you have certainly heard of (who was, I believe, the most notorious blasted rascal in the world, and who had, by all sorts of crimes, amassed immense wealth), was so sensible of the disadvantage of a bad character, that I heard him once say, in his impudent, profligate manner, that though he would not give one farthing for virtue, he would give ten thousand pounds for a character; because he should get a hundred thousand pounds by it; whereas, he was so blasted, that he had no longer an opportunity of cheating people.  Is it possible, then, that an honest man can neglect what a wise rogue would purchase so dear?

There is one of the vices above mentioned, into which people of good education, and, in the main, of good principles, sometimes fall, from mistaken notions of skill, dexterity, and self-defense, I mean lying; though it is inseparably attended with more infamy and loss than any other.  The prudence and necessity of often concealing the truth, insensibly seduces people to violate it.  It is the only art of mean capacities, and the only refuge of mean spirits.  Whereas, concealing the truth, upon proper occasions, is as prudent and as innocent, as telling a lie, upon any occasion, is infamous and foolish.  I will state you a case in your own department.  Suppose you are employed at a foreign court, and that the minister of that court is absurd or impertinent enough to ask you what your instructions are? will you tell him a lie, which as soon as found out (and found out it certainly will be) must destroy your credit, blast your character, and render you useless there?  No.  Will you tell him the truth then, and betray your trust?  As certainly, No.  But you will answer with firmness, That you are surprised at such a question, that you are persuaded he does not expect an answer to it; but that, at all events, he certainly will not have one.  Such an answer will give him confidence in you; he will conceive an opinion of your veracity, of which opinion you may afterward make very honest and fair advantages.  But if, in negotiations, you are looked upon as a liar and a trickster, no confidence will be placed in you, nothing will be communicated to you, and you will be in the situation of a man who has been burned in the cheek; and who, from that mark, cannot afterward get an honest livelihood if he would, but must continue a thief.