Philosophy seeks to analyze things with a rational framework that can give a justified face to human behavior. Of course, the appropriate type of behaviors can be explained and described by assigning them to ethics and output called ethical behaviors. With this approach, rational reasoning and accurate presentation of issues in accordance with reason can be a way to achieve ethical behavior, which according to Richard Mervyn Hare requires receiving some principles as a default or at least accepting them. What can help moral actions and lead to it is education based on rational teachings and based on the rule of generalizability, universality and advice, which is based on descriptionism and forms the foundations of Hare's moral philosophy. Referring to how to teach and adhere to it in his philosophical system, he introduced indoctrination, practice and skill as his central model, which will eventually lead to habit in moral characteristics along with advice.