The spread of liberal democracy around the world is not inevitable, but it is the most likely outcome of the historical process.
Sustainability isn't a cost—it's an investment in our future.
人类不仅是自然的产物,也是自然的改造者,常常带来不可逆转的后果。
我们都是自己思想的囚徒,只有通过自我反思,我们才能获得自由。