The challenge in computational learning theory is to understand the capabilities and limitations of learning algorithms.
The stranger is close to us, insofar as we feel between him and ourselves common features of a national, social, occupational, or generally human, nature. He is far from us, insofar as these common features extend beyond him or us, and connect us only because they connect a great many people.
地理学的研究是研究人与环境之间的关系。
成功没有捷径，只有脚踏实地才能走得更远。
心理学不应关注静态元素，而应关注有机体与环境之间的动态相互作用。
君子学习的目的，只是为了追求真理。
The energy you put out is the energy you get back.