The boundary between physics and mathematics is not as clear-cut as one might think.
物理学和数学之间的界限并不像人们想象的那么清晰。
Life is too short to waste time hating anyone.
I ought to have judged by deeds and not by words.
To lose one parent may be regarded as a misfortune; to lose both looks like carelessness.
唯一比被人议论更糟糕的事,就是无人议论。
All thinking men are atheists.