在我们推理关于事实的过程中，有各种可能的确证程度，从最高的确定性到最低级别的道德证据。
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.
Life is about growth and change. When you stop growing, you stop living.
世界可能很刻薄，但人们不必如此。
一切人类知识都源于经验。