The strength of a nation lies in the unity of its people.
在儿童时期没有养成思想的习惯。将使他从此以后一生都没有思想的能力。
The question of truth and falsehood is always present, but it is not always answerable.
我从不后悔自己的选择,因为那是我的人生。
可持续性不是一种选择;它是农业前进的唯一道路。
The best way to learn econometrics is by doing—working with real data and real problems.