解释：知道房屋漏雨的人在房屋下，知道政策有失误的人在民间，知道经书错误的人在诸子。

It seems to me that if you or I must choose between two courses of thought or action, we should remember our dying and try so to live that our death brings no pleasure to the world.

宇宙是一个比我们可能想象的更加奇妙的地方。

激发对一门学科兴趣的最好方法是使其值得了解，这意味着要使知识可用。