For purposes of action nothing is more useful than narrowness of thought combined with energy of will.

For purposes of action nothing is more useful than narrowness of thought combined with energy of will.

就行动的目的而言，没有什么比狭隘的思想加上坚强的意志更有用的了。

-- Henri Frederic Amiel 亨利·弗里德里克·埃米尔