But the power of instruction is seldom of much efficacy, except in those happy dispositions where it is almost superfluous.

But the power of instruction is seldom of much efficacy, except in those happy dispositions where it is almost superfluous.

但是，教育的力量很少有多大作用，除非是在那些几乎是多余的快乐的性情中。

-- Edward Gibbon 爱德华·吉本