In our reasonings concerning matter of fact， there are all imaginable degrees of assurance， from the highest certainty to the lowest species of moral evidence.

Writing is a way of giving voice to the voiceless.

有时最重要的实验是那些失败的实验，因为它们教会我们什么是行不通的。

一个公司的真正价值是通过它对人类和地球的影响来衡量的。