Let us not unlearn what we have already learned
The sacrifice of Diogenes to all the gods.
As a matter of self-preservation, a man needs good friends or ardent enemies, for the former instruct him and the latter take him to task.
He has the most who is most content with the least.
When two friends part they should lock up each other's secrets and exchange keys. The truly noble mind has no resentments.
All things are in common among friends.