《尚书·说命下》“,惟斅學半,念终始典于学,厥德修罔觉”,孔安国传“:斅,教也,教然后知所困,是學之半。”孔颖达疏“:教人然后知困,知困必将自强,惟教人乃是學之半,言其功半于學也。”《[1]礼记·学记》在阐述“教学相长”这个道理时,引作“《兑命》曰:學學半。”郑玄注“言學 “The book says that under the command of life,” “However, I learn half, read the beginning of the Code in the school, Jue De repair mindless,” Kong An Guo Chuan “: 斅, teach also teach then know the trapped is half of learning. Kong Yingda Shu ”: to teach people and then sleepy, sleepy will be self-improvement, but to teach people but learning half, saying that their merits and demerits in learning also.“ ”[1] Book of Rites,“ learning ”in the“ teaching ” When the truth, quoted as “” against the "said: learn half