Aristotle's Theory of Happiness and Kant's Theory of Self-discipline belong to two different patterns.The former rethinks the code of conduct, judges its moral value in accordance with whether or not it has fulfilled the purpose and takes happiness as its end.The latter is an abstract and dialectical moral philosophical argumentation which dwells on the finalization of behavior and makes moral judgment by behavior-rooted motives and principles.However, Otfried Hoffe believes that they are interlinked and complementary as complete pattern of human behavior can only be accurately explained by combining them together.Otfried Hoffe's Moral Philosophy endeavors to integrate these two kinds of ethics.The discrepancy, in his opinion, lies in different behavior structures, namely the behavior pattern of pursuit and the behavior pattern of will.By recurring to the concept of absolute kindness, the same moral value they pursue, a combination of both can be achieved in moral philosophy and thus a conclusion is drawn that happy life lies on living in harmony with moral principles.