[鱼与熊掌 / 魚與熊掌, yú yǔ xióng zhǎngㄩˊ ㄩˇ ㄒㄩㄥˊ ㄓㄤˇ] lit. the fish and the bear's paw, you can't have both at the same time (成语 saw, from Mencius); fig. you must choose one or the other; you can't always get everything you want; you can't have your cake and eat it#60442