To Demonicus (31-32)

But to be affable, you must not be quarrelsome, nor hard to please, nor always determined to have your way; you must not oppose harshly the angry moods of your associates, even if they happen to be angry without reason, but rather give way to them when they are in the heat of passion and rebuke them when their anger has cooled; you must avoid being serious when the occasion is one for mirth, or taking pleasure in mirth when the occasion is serious (for what is unseasonable is always offensive); you must not bestow your favors ungraciously as do the majority who, when they must oblige their friends, do it offensively; and you must not be given to fault-finding, which is irksome, nor be censorious, which is exasperating.

If possible avoid drinking-parties altogether,[*] but if ever occasion arises when you must be present, rise and take your leave before you become intoxicated;[*] for when the mind is impaired by wine it is like chariots which have lost their drivers; for just as these plunge along in wild disorder when they miss the hands which should guide them, so the soul stumbles again and again when the intellect is impaired.[*] Cultivate the thoughts of an immortal by being lofty of soul, but of a mortal by enjoying in due measure the good things which you possess.[*]