The only sure weapon against bad ideas is better ideas.

Related:

• Liberalism:
  Bad ideas in search of a big budget...
• Abuse is the weapon of the vulgar. --
  Samuel Griswold...
• Preventive maintenance is man's only weapon against
  entropy...
• The way to get good ideas is to get lots of ideas and throw the bad ones away.
  Linus Pauling, Nobel Prize Winner,...
• We are healthy only to the extent that our ideas are humane.
  -- K....
• IBM: Ideas
  Bring...
• Ideas are
  duty free...
• The clash of ideas is the sound of
  freedom...