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 TwainFor all the talk you hear about knowledge being such a wonderful thing, instinct is worth forty of it for real unerringness.
Mark TwainFor instance, take this sample: he has imagined a heaven, and has left entirely out of it the supremest of all his delights, the one ecstasy that stands first and foremost in the heart of every individual of his race - and of ours - sexual intercourse!It is as if a lost and perishing person in a roasting desert should be told by a rescuer he might choose and have all longed-for things but one, and he should elect to leave out water!
Mark Twain