Related:

• Two may keep counsel, if two be away. -- Heywood (1497-1580)
• Three may keepe counsayle, if two be away. -- John Heywood (c.
  1565) -- Proverbes, Part ii, Chap. v...
• For iii may keep a counsel if twain be away.
  -- Geoffrey Chaucer (1328-1400) -- The Ten Commandments of Love...
• Three may keep a secret, if two of them are dead. -- Benjamin Franklin (1706-1790)
• Three may keep a secret, if two of them are dead. -- Benjamin Frankli
• The Supreme court says three may keep a secret, if two of them used to work for the CIA.
  -- Poor Jimmy's Almanac...
• An apple every eight hours will keep three doctors away.