《徐霞客游记·浙游日记上》
这样做，是考虑到今后我行踪遥远，道路险阻，没有方便的通信条件。
此后行踪修阻，无便鸿即通信也。
My reason for doing so was because I foresaw that my journey would be far-ranging, that the roads would be treacherous, and that communication would be very difficult.