发现的喜悦是推动数学家前进的动力。
The joy of discovery is what drives mathematicians forward.
You cannot always control what goes on outside, but you can always control what goes on inside.
Innovation is the driving force for the sustainable development of enterprises.
I believe that we are all born with a purpose, and mine is to sing.
自然是自由的领域，因为在她的统治下，任何专制都无法存在。