The best paradoxes raise questions about what kinds of contradictions can occur—what species of impossibilities are possible. - William Poundstone

Are there any mythical beasts which aren't simple pastiches of nature? Centaurs, minotaurs, unicorns, griffons, chimeras, sphinxes, manticores, and the like don't speak well for the human imagination. None is as novel as a kangaroo or starfish.

Samuelson, however, hedged his personal bets - by putting some of his own money in Berkshire Hathaway.

Use "entropy" and you can never lose a debate, von Neumann told Shannon - because no one really knows what "entropy" is.