我们今天种植的每一棵树都是留给后代的遗产。

我从不考虑失败，总是想着胜利。

“唯一真正无边无际的是人类精神。”

"The truth is rarely pure and never simple."

The function of entrepreneurs is to reform or revolutionize the pattern of production by exploiting an invention or, more generally, an untried technological possibility for producing a new commodity or producing an old one in a new way.

To succeed, planning alone is insufficient. One must improvise as well.