I attempt an arduous task; but there is no worth in that which is not a difficult achievement.

I attempt an arduous task; but there is no worth in that which is not a difficult achievement.

我尝试一项艰巨的任务;但是没有困难的成就是没有价值的。

-- Publius Ovidius Naso (Ovid) 奥维迪乌斯纳索（奥维德）