Happiness ain't a thing in itself -it's only a contrast with something that ain't pleasant. And so, as soon as the novelty is over and the force of the contrast dulled, it ain't happiness any longer, and you have to get something fresh.
Mark TwainWhen we think of friends, and call their faces out of the shadows, and their voices out of the echoes that faint along the corridors of memory, and do it without knowing why save that we love to do it, we content ourselves that that friendship is a Reality, and not a Fancy--that it is builded upon a rock, and not upon the sands that dissolve away with the ebbing tides and carry their monuments with them.
Mark Twain