证明的严谨性将数学与所有其他科学区分开来。

Money doesn't talk, it swears.

晏子春秋

What we see changes what we know. What we know changes what we see.

A school should not just be a place to learn, but a place that inspires learning.

你无法预先把点点滴滴串连起来，只有在回顾时才能明白它们是如何联系在一起的。