Here is the Socratic method in crude form: When someone makes a claim about right and wrong or good and bad, question it. Ask what the claim means, and about other things its holder believes, and look for tension between those points; show with your questions that the claim must in some way be unsatisfactory to the person who made it. In effect you deny what your discussion partners say, but the denial is artful. If you do this right, it won’t even sound like an argument. They will refine their claims, and now you do it again.