"Endless duration makes good no better, nor white any whiter. If the rose at noon has lost the beauty it had at dawn, the beauty it had then was real. Nothing in the world is permanent, and we are foolish when we ask anything to last, but surely we're still more foolish not to take delight in it while we have it. If change is of the essence of existence one would have thought it only sensible to make it the premise of our philosophy. We can none of us step into the same river twice, but the river flows on and the other river we step into is cool and refreshing too." -- W. Somerset Maugham