The challenge in computational learning theory is to understand the capabilities and limitations of learning algorithms.

我认为在电影制作中冒险是很重要的。

The teacher's task is not to implant facts but to place the subject to be learned in front of the learner and, through sympathy, emotion, imagination, and patience, to awaken in the learner the restless drive for answers and insights which enlarge the personal life.

才能不足的人计谋多，见识不够的人事情多，威仪不足则使人怨怒多，诚信不够则言语多，勇气不足则辛劳多，明细不够则多察查，事理不足则多辩论，情分不够则多礼仪。

最大的风险是根本不冒险。