数学是一种创造性的努力，就像艺术或音乐一样。
Mathematics is a creative endeavor, just like art or music.
No man's knowledge here can go beyond his experience.
The only way to do great work is to love what you do.
解析：教导学生，不到他想弄明白而不得的时候，不去开导他；不到他想出来却说不出来的时候，不去启发他。