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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.
数学不是一门演绎科学——那是陈词滥调。当你试图证明一个定理时,你不仅仅是列出假设然后开始推理。你所做的是反复试验、实验和猜测。
我的人生没有退路,只有前进。
用正确的眼光看,最平凡的生活也能变得非凡。
The greatest obstacle to progress is not ignorance, but the illusion of knowledge.