因人而异

Explanation: Because people vary. 　　Source: Lu Xun's "quasi-love affair about woolly-headed" style and mood, however, tend to like, not only vary, but because of something specific, varies with time. " 　　Examples: But style and mood, tendency and the like, not only ~, and because the incident vary, change with time. (Lu Xun's "quasi-love affair about woolly-headed")