教学的艺术不在于传授本领,而在于激励、唤醒和鼓舞。
物理学家必须有一种信念,即自然之书是用一种他可以学会阅读的语言写成的。
The best way to learn econometrics is by doing—working with real data and real problems.
The boundaries which divide Life from Death are at best shadowy and vague. Who shall say where the one ends, and where the other begins?