True happiness is of a retired nature, and an enemy to pomp and noise; it arises, in the first place, from the enjoyment of one''s self, and in the next from the friendship and conversation of a few select companions.
Reveal not every secret you have to a friend, for how can you tell but that friend may hereafter become an enemy. And bring not all mischief you are able to upon an enemy, for he may one day become your friend.