在自然状态下，利益是权利的尺度。
In the state of nature, profit is the measure of right.
我们越理解个别事物，我们就越理解上帝。
坚持志向就像心痛一样，心思全在痛处，哪有时间说闲话、管闲事。
One of the advantages of being old is that you can speak your mind without worrying about the consequences.
The more you read, the more you realize how little you know.
The greatest hazard of all, losing one’s self, can occur very quietly in the world, as if it were nothing at all.