Insult not another for his want of a talent you possess: He may have others which you want. - James Burgh

If you want to gain any man's good opinion, take particular care how you behave the first time you are in company with him; the light you appear in at first, to one who is neither inclinable to think well nor ill of you, will strongly prejudice him either for or against you.

If a favour is asked of you, grant it if you can. If not, refuse it in such a manner as that one denial may be sufficient.

Never fish for praise; it is not worth the bait.