唐太宗的文治武功,在皇帝中是名列前茅的,可是他对太子的教育并不成功。其中的道理他悟得很清楚,可就是无法产生积极的效果,恰恰相反,事物的轨迹总是朝他最不愿意看到的方向发展。他先立的太子是李承乾。为了太子的健康成长,太宗可谓煞费苦心,他为儿子挑选了最优秀的老师——于志宁、杜正伦、孔颖达、张玄素等,都是一时俊彦,对每位老师都是千叮咛万嘱咐。贞观七年,太宗对于志宁、杜正伦说:“你们辅导太子,应经常给 Emperor Taizong’s martial arts was one of the best among the emperors, but his education of prince was not successful. One of the reasons he is aware of clearly, but can not produce positive results, on the contrary, the trajectory of things is always the direction he most want to see. His first prince was Lee Seung-san. For the healthy growth of Prince Edward, Taizong can be described as painstaking, he selected the best teachers for his son - Yu Zhining, Du Zhenglun, Kong Yingda, Zhang Xuan Su, etc., are temporary Toshihiko, each teacher is exhorted thousands of instructions. Zhenguan seven years, Taizong for Zhining, Du Zhengren said: ”Your counseling Prince, should often give