可卡因并不是随便的比喻，爬行类的大脑，神经系统最原始的部分之一，在人类熟睡后生产大量的多巴胺。

And cocaine is more than an idle metaphor. The reptilian brain — one of the nervous system's most ancient parts — floods you with dopamine, just as it does after you snort a line of blow.

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尽管同为爬行类的其他恐龙只能在地上跑来跑去，但事实上，翼龙并非真正的恐龙，把它们当作恐龙是个小小的错觉。

Although reptiles like the dinosaurs were plodding on the ground below them, they were not actually dinosaurs themselves - a common misconception.

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鱼龙和鲸类的另一点相似在于：不像其他目前存活的卵生爬行类，他们胎生生下后代。

Ichthyosaurs also resembled cetaceans in another way: unlike most living reptiles, which lay eggs, they gave birth to live young.

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Reptiles and birds have a little bit about it--of it— and primates have a lot and humans have a real lot.

爬行类和鸟类只有很少的心理活动,灵长类有很多,而人类的心理活动就非常多了

耶鲁公开课 - 心理学导论课程节选