Wealth is not about having a lot of money; it's about having a lot of options.
每个圣人都有过去,每个罪人都有未来。
The only way to learn mathematics is to do mathematics.
在信息时代,知识是唯一的可持续竞争优势。
教育的最大的秘诀是:使身体锻炼和思想锻炼互相调剂。