梦想是伟大的种子，但努力才是让它们成长的关键。

Every artist dips his brush in his own soul, and paints his own nature into his pictures.

Memory is like the sea, throwing onto the shore what it wants to hide in the depths.

数学家的工作永远不会完成；总有新的问题需要探索，新的谜团需要揭开。