These mosaics by French street artist Invader (aka Space Invader) are gone now. We post them as a reminder to cherish what you have while you have it. And, since that sounds kind of depressing, we'll let them serve further as a reminder of the manifold beauty that surrounds us, when we start paying attention. Wait, that's pretty depressing too. How about just TGIF? No one can be sad about that.