Credit goes to Eric Weeks from the University of Pennsylvania for this, his entry for the APS News T-Shirt/Bumper
Sticker Slogan Contest. All I did was re-typeset the thing and add some pop-up text and hyperlinks.
Thanks go to Evelyn Kinzel at Ohio Dominican University for recognizing the not-quite Lagrangian conservation statement.
Move the mouse pointer over the equations for fun, click for enlightenment.