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 我从未遇到过一小时阅读不能解除的痛苦。
I have never known any distress that an hour's reading did not relieve.
Nothing is so fatiguing as the eternal hanging on of an uncompleted task.
任何一种成瘾都是恶习,无论是对酒精、吗啡或理想的成瘾。
"The only true wisdom is in knowing you know nothing."
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.