Ruminating on art, as Gauguin advised, was dangerous for Van Gogh, bringing back painful memories that drove him mad.

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The quest for the true claimant drove people mad.

ECONOMIST: The man and his pen

"Talking to a very feisty head teacher there it drove her absolutely mad, " said Mr Barton.

BBC: Head teacher Geoff Barton plans Iraq return

To judge by this MSNBC clip, and this one, it drove them into a mad and wonderfully entertaining frenzy.

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Most of us are not interested in what mad thoughts drove Madoff to steal or justify the theft, but what could have been done to prevent it.

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That's what drove Snow White's old Queen mad.

CNN: Te'o tale a mirror to our gullibility?