賈島 十年磨一劍，霜刃未曾試。 To forge a fine sword, it took me ten years; It has never been wielded in anger.

《劍客》  北宋 • 賈島
 

十年磨一劍，
霜刃未曾試。
今日把示君，
誰有不平事。 

JIAN KE: "The Swordsman"
-- by JIA DAO (779 - 843)
 -- Translated by Frank C Yue
 
To forge a fine sword, it took me ten years;
It has never been wielded in anger.
I am showing you its sharp blades today;
It's eager to redress wrongs right away!