According to Buddhism, the fundamental root of all the pain and the suffering that we have is because of clinging to dualism. You can say dualism is like equal to, I think the Christians talk about Satan, something evil. In Buddhism, dualism is the evil. So evil or negative force does not exist outside. As you long as you have the dualistic mind or dualistic distinctions, you will always have a comparison. Therefore dualism is like the source of the insecurity. Dualism creates the insecurity. It is dualism, it is the dualistic mind, that which we call pride. It is the dualism, that which we call anger, aggression, jealousy, passion, greed. All these emotions are basically a dualistic mind that has become so out of control.
Fundamental View of Buddhism, Moscow 2010