Kirei Kotomine

Do not feign ignorance.
Forgiveness is returned with retribution, trust with treachery, hope with doubt, light with darkness, life with death.

Humans are truly an interesting bunch.
Even when on the verse of death, they still cannot release themselves from their own falsehoods.

I desire to cloud the world in darkness, while you to illuminate the world in light.
But they are one in the same. When All is said and done, the power to grant the wishes of everyone is nothing more than "the flow of life"
Just as all things are in constant flux.
It is only providence that to wish for happiness in the world, one must first bring sorrow