The anarchic nature of the international system forces states to compete for power.
文学是人类的记忆，没有记忆，人类将迷失。
Sustainability isn't an option—it's our responsibility to future generations.
In scientific work, those who refuse to go beyond fact rarely get as far as fact.
Technology is a tool, creativity is the soul.
一个人能经历的最美好的事物就是神秘。
Safety isn't just a policy; it's a culture we must live every day.
We have to be part of the solution when it comes to climate change.