我写歌是因为我脑子有问题，需要把东西发泄出来。

可持续性是现代农业的基石。没有它，我们可能会失去我们所建立的一切。

廉价海鲜的真正代价由海洋承担。

The first man who， having fenced in a piece of land， said 'This is mine，' and found people naïve enough to believe him， that man was the true founder of civil society.

The anarchic nature of the international system forces states to compete for power.

预测未来的最好方法就是创造未来。