4. 学问之道,—道=切要, "that which is most important in ."—The Chinese sages always end with the recovery of "the old heart"; the idea of "a new heart"; the idea of "a new heart" is unknown to them.One of the Ch＇ing says: "The thousand words and ten thousand sayings of the sages and worthies are simply designed to lead men to get hold of their lost minds, and make them again enter their bodies. This accomplished, "they can push their inquires upwards,and from the lowest studies acquire the highest knowledge."