"The human mind is a set of information-processing machines that were designed by natural selection to solve adaptive problems faced by our hunter-gatherer ancestors."

每一本书都是通往另一个世界的门，一个只存在于读者想象的世界。

The past is not a shadow but a living presence.

译文：心中能分辨是非对错，那么处理事情就能快速决断；做人不能忘记廉耻，立身处世就不会有卑劣污浊的行径。赏析：做人要明辨是非，做事方能果断坚决，才不会黑白不分，优柔寡断。仁义礼智信，我们时刻铭记古人的做人准则，不要做有伤自身名节的事。