商业中最危险的一句话是："我们一直都是这样做的。"
The most dangerous phrase in business is: "We've always done it this way."
The imagination imitates. It is the critical spirit that creates.
数学的本质在于它的自由。
不要让成功冲昏头脑，也不要让失败打击内心。
The middle of every successful project looks like a disaster.
