幸福来自内心。

The study of algorithms is as much about creativity as it is about logic and mathematics.

系统辨识的挑战不仅在于拟合数据，还在于提取有意义且可推广的模型。

The road to hell is paved with works-in-progress.

这不是钱的问题，而是让事情发生的能力。

关心是某事物确实重要的状态。