A mathematician's work is never truly finished; there is always more to explore.
Dream big, work hard, and stay focused.
Science knows no country, because knowledge belongs to humanity, and is the torch which illuminates the world.
Stay focused, focus on your goals.
True leadership is about creating more leaders, not more followers.
有时候要大胆，有时候要小心，一个聪明人知道什么时候该怎么做。