A great way to understand yourself is to seriously reflect on everything you find irritating in others.
数学是我们建立对世界理解的基础,正是通过这种理解,我们才能解决最复杂的问题。
The farmer is the only man in our economy who has to buy everything at retail, sell everything at wholesale, and pay the freight both ways.
你今天感受到的痛苦将成为你明天的力量。