>>10
There are 2 rational metaphysical branches. The first one is science, the second is sentience. The idea of good and evil is a rational observation of the role of pain, pleasure and higher pleasure in our existence as sentient beings and our attitudes towards other sentient beings. I know you commies hate this branch of metaphysics because it leads to unanswerred questions which religions like to assume, but denying the existence of sentience is like claiming the universe is absolutely unpredictable and there is no need for science.