States are inherently aggressive and expansionist because they exist in an anarchic international system where there is no higher authority to keep them in check.

The richness I achieve comes from nature, the source of my inspiration.

The great secret that all old people share is that you really haven't changed in seventy or eighty years. Your body changes, but you don't change at all. And that, of course, causes great confusion.

儿童对活动的需要几乎比食物的需要更为强烈。