That is what learning is. You suddenly understand something you've understood all your life, but in a new way.
这就是学习。你突然以一种新的方式理解了你一生都在理解的东西。
The tragedy of great power politics is that even well-intentioned states are forced to act in ways that can lead to conflict and war.
The only thing I can rely on is my own perception, and that is always changing.