A virtue to be serviceable must, like gold, be alloyed with some commoner, but more durable alloy.

A virtue to be serviceable must, like gold, be alloyed with some commoner, but more durable alloy.

美德要有用，就像黄金一样，必须用更普通、更耐用的合金来合金化。

-- Samuel Butler 塞缪尔巴特勒