States are rational actors, and they will always act in their own self-interest.

最大的风险就是不冒任何风险。

我总是被那些复杂且有深度的角色所吸引。

宇宙是一个相当大的地方。如果只有我们，那似乎是对空间的极大浪费。

The journey of science is not just about the destination, but the path we take to get there.

试图在不激发学生学习欲望的情况下进行教学的老师，就像在冷铁上敲打。