There are only two tragedies in life: one is not getting what one wants and the other is getting it.
生活里有两个悲剧:一个是没有得到我们想要的;另外一个是得到了。
诗人可以从任何事件中存活,印刷错误除外。
儿童值得拥有既让他们高兴又挑战他们的艺术。
数学的本质在于它的自由。