经济理论提供工具,但现实世界的测试会完善它们。
看见先于言语。孩子在能说话之前就已经在看和辨认了。
A red rose is not selfish because it wants to be a red rose. It would be horribly selfish if it wanted all the flowers in the garden to be both red and roses.
农业现代化不是喊出来的,是做出来的。