权力的代价总是高昂的，但无力的代价更高。
一个人若不付出一些无知的代价，就永远不会幸福。
What I regret most in my life are failures of kindness.
"The only way to learn how to write is to write."
技术可以帮助我们监测森林，但智慧教会我们如何保护它们。
The most effective way to promote democracy is not through military intervention but through the slow and steady process of building institutions and promoting economic development.