The only real failure in life is not to be true to the best one knows.

"Die Kunst ist das Sich-ins-Werk-Setzen der Wahrheit."

To be a slave in this world is very different from being a slave in another.

The structure of the international system forces states to behave in certain ways, regardless of their internal characteristics.

如果你总是生气或抱怨，人们就不会有时间理你。