The so-called science of poll-taking is not a science at all but mere necromancy. People are unpredictable by nature, and although you can take a nation's pulse, you can't be sure that the nation hasn't just run up a flight of stairs, and although you can take a nation's blood pressure, you can't be sure that if you came back in twenty minutes you'd get the same reading. This is a damn fine thing.

Auteur: E.B. White