The truth is, the science of Nature has been already too long made only a work of the brain and the fancy: It is now high time that it should return to the plainness and soundness of observations on material and obvious things.

The most important thing is to never stop dreaming.

选择朋友要慢，改换朋友要更慢。

逝者是我们求知路上的无声合作者。

我写作是为了理解我所想的。

最好的设计来自于深入理解问题，然后找到最简单的解决方案。