What is good? What is evil? In consciousness, we always use two words with opposite meanings to measure people, things and things, good and bad, righteousness and evil, success and failure...
What is justice? Plato believed: "Everyone doing his duty is justice." Ulbian believed: "Justice is the stable and eternal meaning of giving everyone their due rights." Kelsen believed: "Justice is a subjective value judgment."
Every sword is double-edged: good and evil.
The truth of the universe as a whole is impermanence. There is no such thing as complete justice or complete evil.
If there is evil that justice cannot defeat, should we carry out justice to the end even if we succumb to evil, or should we not hesitate to stain our hands and use evil to fight evil?
Is there darkness behind the light? Is there necessarily evil behind justice?