志之所趨，無遠勿屆，窮山距海不能限也；志之所向，無堅不入，銳兵固甲不能御也。
只要心中有遠大的志向，沒有不能達到的地方；而心中所追求的，則沒有任何困難可以阻攔。
The best way to predict the future is to invent it.
The essence of mathematics lies in its ability to reveal hidden patterns and structures in the universe.
Every great and deep difficulty bears in itself its own solution. It forces us to change our thinking in order to find it.