每一本书都是通往另一个世界的门。
工会对工资和就业的影响常常被误解。
The most powerful art is often the most ambiguous.
——在北京蒙藏统一政治改良会欢迎会的演说,1912年9月1日
技术变革不是外生的;它是人们对市场激励做出反应而采取的有意行动的结果。
农业科技研发要贴近实际需求,不能脱离生产一线。
No man really knows about other human beings. The best he can do is to suppose that they are like himself.
A good algorithm is like a sharp knife—it does exactly what it is supposed to do with a minimum of effort.
She was my most special friend. My only friend.