写作是一种乐观的行为。如果你觉得它不重要，你就不会费心去做。
【译文】 子游问孝，孔子说：“现在的孝顺，只是能赡养老人。即使是犬马，都会得到饲养。不敬重，有何区别？”
The pursuit of mathematical knowledge is a journey that never ends.
Quality is more important than quantity. One home run is much better than two doubles.
The anarchic nature of the international system means that states must rely on self-help to ensure their survival.
The best time to plant a tree was 20 years ago; the second best time is now.