Sometimes life hits you in the head with a brick.Don’t lose faith.
数学推理可以相当系统地看作是两种能力的结合运用,我们可以称之为直觉和独创性。
世界是一个非常复杂的地方,而且它并没有变得简单。
The role of business is to produce products and services that make people's lives better—while using fewer resources—and to act lawfully and with integrity.