This article talks about how god didn't choose satan to make people do the right things, he chose Jesus because of the agency that Christ would give us. (Based off of an university seminar)
This small article is an excerpt from the December 27, 20013 Daily Kabbalah lessons. It talks about how you can get a good balance of good and evil, and how both need each other to survive.
Good and evil coexist by the fact that one is there for truth and right, another is there for bad and shadow. This family decided to look for people in need and help them across 'Merica. In times of bad, there is always some good.
Lady Justice is a woman who holds a sword within one hand and another hand holds a scale. The sword of justice is there when the scale of truth fail. Good and evil MUST coexist.
Hammurabi said that if you lost an eye from someone's doing, (Or a tooth) Than you could take away that person's eye. However, if we took away someone's things for this evil is only making the world full of more evil. This qoute is from (Obviously) Mahatma gandhi, a wise man who basically within this qoute, said that Evil cannot survive with out good, representing my theme.
I feel like the people of todays world act like jerks because they've been spoiled and gotten everything they want, but good people are kinda like the gosh darn best person you'll every meet because they know how it feels. Just goes to show that evil can coexist with good.