The issue of temperament has always been a major concern of Confucianism. Then temperamental inclination of Confucianism was already excellently shown in Confucius. Confucianism has always valued factuality and expediency. Compared with the non-sentient and anti-sentient metaphysics of Buddhism, Daoism, and traditional western philosophy, Confucian philosophy can be called the philosophy of temperament. If the metaphysics of temperament. If the metaphysics of reason is the logical remise and spiritual basis on which the western rule-by-law society is built, the metaphysics of temperament is the soil and source of the Chinese rule-by-man historical happenings. Different from the western philosophy, which brings sentiment into reason and values reason rather than sentiment, Confucian philosophy has always been committed to integrating reason into sentiment and assimilate the two of them. Post-modern philosophy seems to notice that the greatest danger of the modern metaphysics, which loses its disposition toward temperament, is the possibility of becoming a terror philosophy that be-slaves mankind and destroys human nature. Through an extensive exploration of the non-rational field, post-modern philosophy extremely highlights the sentimental temperament of men and, moreover, makes our philosophy confront the real living-world. Through the idea of temperament, Confucianism realizes the double constructions of religiousness and beliefs, and therefore the absolute rule of the ancient Chinese's spiritual life by Confucianism is understandable.