出自先秦《荀子·哀公》。鸟被逼得走投无路之时就会用嘴啄人，兽到困窘之时就会用爪抓人，人到穷困潦倒之时就会设计骗人。以鸟兽困窘之时的行为为喻，说明人到穷困潦倒之时便会放弃道德操守的原因。

Responsible mining is not an option, it's an obligation we owe to our planet and future generations.

Quality is not a chance; it is a choice.

做出伟大工作的唯一方法就是热爱你所做的事。

心智首先是生存的工具，然后才是思考的工具。

The most dangerous art is the kind that makes you think.

In mathematics, as in life, the most profound discoveries often come from asking the simplest questions.

我认为成功的关键是对你所做的事情充满热情。