在别人家住的太久了，人就变得不再尊贵，来往太频繁了，亲密的程度就会下降。

未来无人知晓，正因如此，我们应该活在当下。

"Purpose is what gives meaning to profit."

Mathematics is not about numbers, equations, computations, or algorithms: it is about understanding.

唯一能战胜厄运的就是努力工作。