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珍贵的宝物容易求得,而真心相待的郎君却难以寻觅
The pursuit of knowledge is the most noble of human endeavors.
当我们理解基于知识的系统时,情况将与以前一样-除了我们的指尖会被选中。
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.