Mathematics is not just a human invention; it has a deep reality that exists independently of us.

幸福是最近两年里听到最多的词语。幸福不单只是和个人经历和价值相关，它也同样关系到我们的环境。

痛苦是不可避免的，但受苦是可以选择的。

Quality is not something you can add on to a product or service. It must be built in from the beginning.

解析：自然的法则，是损减有余来补充不足；人类社会世俗的作法却不然，而是损减贫穷不足来供奉富贵有余。

法律不是规则的体系，而是原则的体系。