Before I get to the quote, a recommendation -- pick up some of the DVDs of The Muppets if you have a chance. Still fabulous viewing after many years, and a chance to see Roger Moore, Danny Kaye, and many others at some of their oddest moments. The Roger Moore and Miss Piggy love scene is pretty classic.
Okay, here's the quote:
From Kermit the Frog, literally an extension of Jim Henson, comes a life-affirming decency, a passionate belief that there are stories to tell which don't exclude children and don't insult adults, which don't exclude adults but which don't insult children, which can be outrageous and innovative without being arch or misanthropic. There's anarchy here, but it's anarchy that celebrates rather than destroys.
I found this quote in It's not Easy Being Green and Other Things to Consider. Keep this and The World According to Mr. Rogers by your bedside and you'll never start or end your day angry (provided you also open them up and read them).