"Humanity is ugly and greedy. Its endless desires make it better than any other creature at taking without end.
The light of human nature certainly exists, but compared to the evil in human nature, it is utterly insignificant!
If humanity did not possess such inexhaustible evil, then even if Angra Mainyu had corrupted the Holy Grail during the Third Holy Grail War, how could the Grail have accumulated so much All the World's Evil in a mere seventy years?
You, Shirou Emiya, have only seen the beautiful side of human nature, while I, Kirei Kotomine, have only experienced its ugly side. In other words, there is actually no difference between us."
As everyone knew, every elegant villain was a top-tier philosopher. Kirei Kotomine's remarks left Shirou Emiya and the others speechless.
Though Medea was also technically a villain, and had only barely been redeemed now, she disliked Kirei Kotomine, who opposed Yoru Machi, by association. Even so, she had to admit that there was nothing wrong with what he said.
All the World's Evil had been born because of the Einzberns' greed during the Third Holy Grail War. Its growth to this extent over the years was caused by humanity's own negative emotions and inherent flaws. What did any of that have to do with Kirei Kotomine?
Those who stood on the side of justice often relied on their own subjective views to forcibly pin evil deeds on the villains who opposed them.
As a Witch, Medea had committed many evil deeds, but she had never hidden them. Yet those who knew nothing and blamed every mistake on her were precisely the people she despised the most!
Just as Medea had indeed committed the evil deeds a Witch would commit in the legends, but if not for the goddess's schemes