In ancient Greece, the spiritual activities of mankind were divided into to categories: the domain of theory and the domain of practice. The function of theory is to “know for the sake of knowng,” while the function of practice is directed to the practice itself, to “know for the sake of acting.” Theoretical Bildung prepares for our practice the conditions of intellectual ability. On the other hand, practical Bildung can be divided into three forms: Fist, professional Bildung--people can be well edified if they are professional. Second, artistic and aesthetic Bildung--the function of art is to delight as well as edify; an artist should have both talent and virtue, otherwise art can't take the responsibility of moral Bildung. Third, moral Bildung--a morally edified man is highly sensitive to the just and the unjust. The morality that conforms to aesthetic feelings is true morality; the person who has aesthetic feelings is a moral person.