Never stop because you are afraid--you never so likely to be wrong. Never keep a line of retreat : it is a wretched invention.
永远不要因为恐惧而停下来——这是非常错误的。永远不要预备一条撤退路线，这是很糟糕的发明。

——Fridtjof Nansen
——福里乔夫·南森