Never find your delight in another's misfortune.
We tolerate without rebuke the vices with which we have grown familiar.
It is more easy to get a favor from fortune than to keep it.
One ungrateful person does an injury to all needy people.
The future struggles that it may not become the past.
It is a most miserable lot to be without an enemy. [No man can be successful without being envied and hated.]