The farmer is the only man in our economy who buys everything at retail, sells everything at wholesale, and pays the freight both ways.

We cannot be sure of having something to live for unless we are willing to die for it.

解释：德行不够优良的人，难以有崇高的信念与理想。才能不够突出的人，难以有渊博的知识和见解。

"A nation that destroys its soils destroys itself. Forests are the lungs of our land, purifying the air and giving fresh strength to our people."

成功不是终点，失败也并非致命，重要的是继续前进的勇气。

我认为阅读行为赋予读者一种对外部世界的敏感，这是不读书的人有时缺乏的。