Evil would never bring Good, however much they wanted to believe that it would. By the time they discovered the truth, it would be too late.

That's who I am, a man who has been both good and evil throughout his life. pg 14

I lost the most precious thing a man can have: my faith in my fellow man. I laughed and I wept at God's irony, at the absurd way he had chosen to demonstrate to me that I was an instrument of Good and Evil.

You're not trying to find the answer to a question, you're simply trying to confirm something you desperately want to believe: that everyone is evil.

...she was betting on the fact that people were basically good, despite all the Evil in the world.