A fool finds pleasure in evil conduct, but a man of understanding delights in wisdom.

Related:

• A fool finds no pleasure in understanding but delights in airing his own opinions.
  Miscellaneous...
• A fool gives full vent to his anger,
  but a wise man keeps himself under control Miscellaneous...
• A fool shows his annoyance at once, but a prudent man overlooks an insult.
  Miscellaneous...
• Look for the good, not the evil, in the conduct of members of the family.
  Jewish...
• Do not answer a fool according to his folly, or you will be like him yourself.
  Miscellaneous...
• When friends ask, there is no tomorrow.
  Miscellaneous...
• Every man is a fool in some man's opinion.
  Spanish...
• There is a wisdom in this beyond the rules of physic.
  A man's own observation, what he finds good of and...
• Hunger finds no fault with the
  cookery. --...