The social brain hypothesis suggests that our intelligence evolved to manage our complex social lives.
社会大脑假说认为，我们的智力进化是为了管理复杂的社会生活。
Our minds are not designed to cope with the anonymity of modern urban life.
我们的思维并非为应对现代城市生活的匿名性而设计。
Friendship is a matter of time investment.
友谊是时间投资的问题。
The bigger the brain, the more complex the social world it can manage.
大脑越大，它能管理的社会世界就越复杂。
Religion is the price we pay for having a large brain.
宗教是我们为拥有大脑付出的代价。