The pessimist may call the optimist a fool; but who is more foolish, the happy individual who expects more happiness or the one who fills his life with bitterness and has only more despair to look forward to?

Cries for justice are often the bitter laments of the vengeful.

Interesting how the selfish, the ignorant, and the constantly angry all tend to be the same person.

Other people's happiness is the single most annoying thing to bitter people.

Sarcasm is a manifestation of anger, and anger can make you the puppet of your opponents.

Beware of those around you who subtly sow the seeds of doubt.