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。
The social brain hypothesis suggests that our intelligence evolved to manage our complex social lives.
怀疑是智慧的开端。
如果不符合现实，最优雅的理论也是无用的。
Every seed contains the potential to change a community.
The beauty of chemistry is that it's everywhere—you just have to look for it.