"I have always liked the phrase 'nursing a grudge,' because many people are tender of their resentments, as of the thing nearest their hearts."

传记是最亲密的历史形式。

在商业中，就像在生活中一样，我们做出的选择定义了我们是谁。

在数学中，提出问题的艺术必须比解决问题更有价值。