As an educator, Confucius takes his own life as witness to the following belief, that is, with good intention of learning everyone can become perfect. Here, "perfect" is used to describe a state of personality which contains three characteristics: ability, morality and self-contained mentality. Ability makes one available to a significant job or useful to a society. Morality designates a sincere, responsible character which ought to be forever renewed. Self-contained mentality can be attained only through the work of ritual and music, and further manifests itself in a peaceful and joyful state of mind. To elaborate the above ideal is the objective of this essay.