成功不在于金钱,而在于对你所做事情的热爱。
Success is not about the money, it's about the love for what you do.
"The only way to learn mathematics is to do mathematics."
为了将关心转变为行动,我们需要发现问题,找到解决方案以及评估后果。但是世界的复杂性使得这三步都难于做到。