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"I don’t have to be so afraid of good-bye, because good-bye doesn’t have to be forever."

Mathematics is not a deductive science—that's a cliché. When you try to prove a theorem, you don't just list the hypotheses and then start to reason. What you do is trial and error, experimentation, guesswork.

人類最基本的欲望是被承認為一個人。

No one can rob us of our quest for truth.