A fair-minded person tries to see both sides of an argument.
It is easy to kick a person when he is down.
If you wish me well, do not stand pitying me, but lend me some succour as fast as you can; for pity is but cold comfort when one is up to the chin in water, and within a hair's breadth of starving or drowning.
If you can't say anything nice, then don't say anything at all.
Liars often set their own traps.
He who plots to hurt others often hurts himself.