Related:

• That which is not forbidden is mandatory.
• Of Man's first disobedience, and the fruit Of that forbidden tree whose mortal taste Brought death into the world, and all our woe.
  -- John Milton (1608-1674) -- Paradise Lost, Book i, Line 1...
• EVERYTHING NOT FORBIDDEN IS COMPULSORY.
• Everything that is not mandatory is forbidden.
• Noise is Forbidden!: Nada Loud
• Wait! That's the FORBIDDEN dance!
• Educational television should be absolutely forbidden.
  It can only lead to unreasonable disappointment when your child discovers that the letters of the alphabet do not leap up out of books and dance around with royal-blue chickens....
• Books rule the world, or at least those nations which have a written language
  he others do not matter. -- Voltaire...
• Do not spit on the floor --- it is forbidden to discuss politics in public!