有一个农夫在田地里捡到一枚稀有的金币，因为年代久远，金币的外表看起来有些肮脏。

邻人听说后纷纷跑来观看并争相购买农夫的那块金币，农夫表面不置可否，内心却在盘算着怎样才能让他们出价更高。

回到家里，农夫找来砂子和打磨金币用的工具，他想，如果将金币外表的污物去掉，这样肯定能卖个好价钱。随着污物脱落的还有一些极细小的金子的碎片。

终于，金币发出了耀眼的光芒。一位长者看后，把金币放在掌心托了托，然后轻轻摇了摇头，说，重量减轻了，价值也就随之降低了。

【大道理】：

许多时候保持自我本色要比故意做作更能让人信赖，而这种信赖正是我们走向成功的基石。
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