大丈夫立志已决,若山岳之不可移也,安能随时而俯仰,触物而低昂哉?· Once set up,the will of a truely great man should be like a mountain,which cannot be moved. How could it vary frequently with the passage of time and shift in different environments?
(Yelü Chucai [1190-1244]: Records of the Journey to the West)