The only way to prove something is possible is to do it.
证明某事可能的唯一方法就是去做。
The only thing that stands between a man and what he wants from life is often merely the will to try it and the faith to believe that it is possible.
The farmer is the only man in our economy who buys everything at retail, sells everything at wholesale, and pays the freight both ways.
Science is the playground of the taxonomist.
