To be a poet is to have a soul so quick to discern, that no shade of quality escapes it.

学习数学的最好方法就是做数学。

宇宙用方程式和反应说话。

那些善于学习的人们，应当能够求得其学习的甚解，了解之所以这样的缘故，不应当只求得背诵文章，看看便可以了。

As to the gods, I do not know whether they exist or not, or what they are like.

A proof is a device for convincing someone else that a mathematical statement is true.