"If you feel like you're losing everything, remember that trees lose their leaves every year and they still stand tall and wait for better days."

The only person you should try to be better than is the person you were yesterday.

The great powers are always searching for opportunities to gain power at the expense of their rivals, which makes them inherently aggressive.

我们不会获得智慧；我们必须自己发现它，经过一段没有人能代替我们或免除我们的旅程。