Yes, bronze is an alloy. You know what I mean.
清廉潔白
sei.ren.ke-.ppaku
Literally: pure – pure – clean – white
Alternately: Someone’s heart and mind – and their actions in the material world! – are unselfish and fair, moral and ethical. Working to do good for good reasons; having nothing to be ashamed of.
Notes: It’s a state that I wish more people out there in the world at least aspired to, rather than looking for ways to attack and smear it in order to avoid the pain of self-improvement.

Our old friend 弘法! I’m sure he had a lot of human flaws, but… well, it is at least nice to have good ideals.