Ethics is study on morals, main factors being moral, concience, good, evil, love. I would say it society's most important aspect. Without ethics, we are going down the spiral. And there are lot of aspects of ethics: individual and corporate one. Individual is up to each person to do do the best they can, and act responsibly, hence the Plato quote. Corporate one starts at the top and if the head stinks so would the rest of the body.