The non-cognitive thesis is the view in ethics that moral statements do not express beliefs that can be true or false, but rather express emotional attitudes or prescriptions. This idea emphasizes that when people make moral claims, they are not merely stating facts about the world, but instead are conveying their feelings, preferences, or motivations toward certain actions or behaviors. Thus, non-cognitivism challenges traditional views of ethics by suggesting that moral discourse is fundamentally different from factual discourse.