The only limits that exist are the ones you place on yourself.

过度捕捞是一个可以解决的问题，但它需要全球的承诺和地方的行动。

心理学的研究就是研究生活的解决方案。

The modern state is characterized by its ability to concentrate and use power in a way that premodern states could not.

有时候，最难的部分不是放手，而是学会重新开始。