There is no such thing as a happy ending. There are just good stopping places.

When Henry Ford made cheap， reliable cars people said， ‘Nah， what’s wrong with a horse？’ That was a huge bet he made， and it worked.

人们常只想到自己的需要，而没考虑自己的能力。王朔语录

在数学中，你并不理解事物。你只是习惯了它们。

力量微薄却肩负重任，长久以来精神疲惫，若再勉强支撑，衰弱的身体必定无法承受。