农业中最大的风险是世界在变化，而我们却停滞不前。

"We must constantly challenge our assumptions and be willing to change our minds."

Faith is a living, bold trust in God's grace, so certain of God's favor that it would risk death a thousand times trusting in it.

解释：第一次击鼓能振作士兵们的勇气，第二次击鼓可以使士兵们的勇气低落，第三次击鼓士兵们的勇气就消失了。

死者并未消失。他们只是看不见了。