A mathematician is a person who can find analogies between theorems; a better mathematician is one who can see analogies between proofs and the best mathematician can notice analogies between theories.
数学家是能在定理之间找到类比的人；更好的数学家是能在证明之间看到类比的人；而最好的数学家是能注意到理论之间类比的人。
道气常在天地内外运行流转，之所以看不见，是因为它极其清微。
Property is surely a right of mankind as real as liberty.
Don't let your past dictate who you are, but let it be part of who you become.
The test of a first-rate intelligence is the ability to hold two opposed ideas in mind at the same time and still retain the ability to function.