States are rational actors that seek to maximize their relative power in order to ensure their survival in a competitive international system.

Our memory is a more perfect world than the universe: it gives back life to those who no longer exist.

你讲说他人的不善之处，如果这种说法造成了后来的麻烦，你应当怎样去对待呢？

预测未来的最好方法就是创造未来。