国际体系的无政府性质意味着国家必须依靠自助来确保其生存。

The photograph is the most perfect picture.

可持续性不再是选择，而是任何希望长期发展的企业的必需品。

The poor are not irrational; they are just as rational as anyone else, but they operate under very different constraints.

Courage is a virtue necessary not only in war, but in life as well.

电影的美在于它允许我们以一种其他艺术形式无法做到的方式探索人类情感和经验的深度。