Non-dualism is to see the world as pairs in union, not in conflict. The combination of them brings forth something even more beautiful than what was, originally.
Non-dualism requires personal responsibility. I have to think about what I do, and why, because there isn’t necessarily an ‘inherently good’ choice in this worldview. I am responsible to act ethically. Ethics being those beliefs which are inherent to me. In my opinion, morals (externally applied judgments about what one should or should not do) are for people without ethics.