I must go deeper and even stronger into my treasure mine and stint nothing of time, toil, or torture.

I must go deeper and even stronger into my treasure mine and stint nothing of time, toil, or torture.

我必须更深入、更坚强地进入我的宝库，不吝惜任何时间、辛劳或折磨。

-- Zane Grey 赞恩·格雷