每一个数学问题都是通向新理解世界的窗口。
Every mathematical problem is a window into a new world of understanding.
Everyone should be responsible for their actions.
内心守静而不生差错,不让外物扰乱五官,不让五官扰乱内心,这就叫做心中有所得。
未来属于那些为之奋斗的人。