Knowing When to Hang It Up

We get a fair amount of traffic here from random message boards where The Simpsons comes up in conversation and someone posts a link to us.  This is often in the midst of one of the usual spats about when the show fell apart or whether or not Family Guy is better.  About a month ago I was reading through one of these threads (though I neglected to save the link, whoops) and someone posted an excellent quote from Bill Watterson, the guy behind “Calvin and Hobbes”.  Thanks to Google, I was able to find the quote (bold in the…