Ghirga Mayer pointed out the road to a beautiful future. Let him do what he wants to do and realize his ideal, and don't be bound by various reasons. Gilsenas didn't realize his dream, and he didn't want Kotomine Kirei to be like him.
Extended data
Fate/Zero tells the story that in order to obtain the magic power of the Holy Grail, seven magicians summoned the souls of seven people and launched an ultimate war-the Holy Grail War, until the last one was left.
The first three fruitless battles were not enough to end the war, and the fourth battle is now like an arrow on the string. With the belief of winning, magicians came to the battlefield named "Winter Wood". But one of them didn't know what he was fighting for. His name is Kotomine Kirei.
Under the guidance of fate, Yili gradually lost his judgment. He didn't understand why he got the imperial edict. However, fate soon arranged for him to meet a fateful old enemy-Emiya Kiritsugu.