Main Idea: The water is clear from a clean source .The shadow is straight from an upright body.

吴隐之明志（Wu Yinzhi showing attitude）

    晋代吴隐之，以清白廉洁出名。吴隐之到广州上任途中，有意饮用一处叫“贪泉”的水，以激励自己绝不改变节操。在广州任职期间，吴隐之每天只以蔬菜、干鱼为食。从广州返回京城时，他仍然只有简单的行李。
    Wu Yinzhi of the Jin Dynasty was known for being honest and clean .On his way to Guangzhou  to take office ,he intentionally drank the water from Greedy Fountain to warn himself not to change his moral integrity.During his service in Guangzhou he fed himself on vegetables and dried fish only .He returned to the capital with the same simple luggage.