This thesis is a study on the beauty and morality as solvable mechanism of the aggressiveness. It has been hot issue all along whether the aggressiveness is wholly innate or is acquired part or wholly by learning. Generally, the modern anthropology and philosophy have regarded the aggressiveness as a posteriori(acquired) behavior that is formed by cultural and environmental causes. Of course, the aggressive behavior is also brought about cultural and environmental causes. But, in biological viewpoint, the aggressiveness is a innate nature of mankind. The aggressive nature of Homo sapience is a problem of biological and evolutionary issue. Is the aggressiveness in mankind adaptive? It certainly seems to be in viewpoint of evolutionary biology. Steven Pinker quote three motives of the aggressive behavior from Thomas Hobbes' Leviathan. First is competition, second is diffidence(distrust), and third is the emotion of self-importance. The essential of the aggressiveness is a exclusively monopolistic employment of the self-centric right to live. The beauty and morality take their place at antipodes of the aggressiveness. Probably, through the sex contract and the experience of family relation, early ancestors of mankind might have reached at an idea that the right of counterpart is as much respectable as my right to live. And then, they might have been aware of a new way of life and the aesthetic vision. And the sexual selection of mating might have developed the sense and sensibility of morality, through the inter-respect and trust and the experience of promise performance. Woman needs the man who is responsible for the breeding of their child and herself, because she has not the labour power sufficiently. Therefore, woman wants moral man. Because the human is a biological being primarily, it is necessary to applicate sociobiological methodology to mankind. The theory of evolution has contributed to the conceptual unification(consilience) of the sciences.