Jane's Law

I missed this when it came out, almost a decade ago.  It is called Jane's Law, after Blogger Jane Galt:♠

The devotees of the party in power are smug and arrogant.  The devotees of the party out of power are insane.

This showed up at the blog Asymmetrical Information on 21 May 2003.♥ 

Regards  —  Cliff

♠  It turns out that Jane Galt, a word play on John Galt, is really Journalist Megan McArdle.
♥  The blog Asymmetrical Information went dormant 5 January 2008.