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In order to achieve independence, we must rely on our own strength.
对人进行教育,不管他是哪一类。
Do not feel absolutely certain of anything.
In mathematics, the art of proposing a question must be held of higher value than solving it.
Hold yourself responsible for a higher standard than anybody else expects of you. Never excuse yourself.
最成功的产品往往是解决日常问题的最简单方案。