The true spirit of delight, the exaltation, the sense of being more than Man, which is the touchstone of the highest excellence, is to be found in mathematics as surely as in poetry.

如果你感觉自己在走过地狱。走着别停。

尿素合成是一个幸运的发现，但它开辟了一个新的研究领域。

Change is not made without inconvenience, even from worse to better.

I'm more interested in the process than the result.