凡事不能只看表面现象。钓鱼人虽然躬着身子，并不是因为对鱼恭敬；捕捉老鼠的人，把虫子留给老鼠吃，并不是因为喜爱老鼠。

I had ambition not only to go farther than any man had been before, but as far as it was possible for a man to go.

食物的未来取决于我们今天如何对待土壤。