Of Advice.
Advice is a very good thing, it is true; it is however a thing which in society is the most displeasing. A giver of advice, who is incessantly repeating, If I was in your place, I should do so and so, repels every one by his pride and indiscretion. Such an impertinent person should know, that he ought not to give advice without he is asked, and that the number of those who ask it is very limited: we are not, however, speaking here of gratifications of vanity, but of that advice, the kindness and affection of which, gives it a claim to our attention. It is necessary to use much reserve and care, because otherwise you would seem to have a tone of superiority which would array the self-esteem of your friend against your wisest counsels. Of the forms of modesty, no one in this place is superfluous: we may say, "It is possible that I am mistaken, I should be far from having the courage to enquire of you," &c.
If a person makes any objections, do not say, You do not understand me, but, I have not expressed myself properly.
The Gentleman and Lady's Book of Politeness and Propriety of Deportment, Dedicated to the Youth of Both Sexes · The Wunder Library — complete classics, free to read, with narration.