The only meaningful way to study learning is through objective measurement.
研究学习的唯一有意义的方法是通过客观测量。
技术要为产品服务。
认为未来不可预测的观点每天都在被我们轻易解释过去的事实所削弱。
The greatest sweetener of human life is Friendship. To raise this to the highest pitch of enjoyment, is a secret which but few discover.
贫贱时，对富贵漠然置之，他日得志一定不自矜；富贵之时，心中不忘贫贱之日，即便失却富贵心中也必无怪怨。
艺术作品是永恒的痕迹。