Mathematics is not a spectator sport.
数学不是一项观赏性运动。
战略的核心包含三个要素：诊断、指导方针和连贯的行动。
I've learned that you have to be strong enough to stand alone, smart enough to know when you need help, and brave enough to ask for it.
真正的爱国主义不排斥对于其他人的爱国主义的理解。
世界上充满了故事，但那些留在我们心中的，是那些触及我们最深恐惧和渴望的故事。
Every town has its ghosts, and every ghost has its story.
The most important thing in science is not to be afraid to ask questions.