Related:

• He who is priceless cannot sell himself to others.
• Anyone who is concerned about his dignity would be well advised to keep away from horses.
  -- Duke of Edinburgh...
• There's not one wise man among twenty will praise himself. -- William Shakespeare
• Individuals domiciling in vitreous edifices would be well advised to refrain from catapulting petrogenetic projectiles.
  [ people who live in glass houses shouldn't throw stones. ]...
• It cannot be called ingenuity to kill one's fellow citizens, to betray friends, to be without faith, without mercy, without religio
  by these means one can acquire power but not glory. -- Machiavelli...
• Who then is free? The wise man who can command himself. -- Horace (65-8 B.C.)
• He who knows others is wise. He who knows himself is enlightened. -- Lao Tsu
• weasel n. [Cambridge] A naive user, one who deliberately or accidentally does things that are stupid or ill-advised.
  Roughly synonymous with loser....