Two Colors Of Self
We all have a kind of internal chessboard. It constructs self and life as having two sides. Two pictures.
In the chessboard, we use two colors. The subsequent two sides of the chessboard are the white and black pieces. They symbolize the "good" and "evil" sides of our self. That's true of the world too.
Usually, in our life, we may be more easily influenced by one side, giving more power to "good" or "evil." Often, one attacks and the other defends. With this, there can be two kinds of people in the world.
Self - two narratives. As a man thinks, so is he.
"For the good that I will to do, I do not do. But the evil I will not to do, that I practice." (Romans 7:19)