The study of mathematics is the indispensable basis for all intellectual and spiritual progress.

生活不是等待暴风雨过去，而是学会在雨中跳舞。

"Nothing is too high for a man to reach, but he must climb with care and confidence."

【释义】过度保护抑制型儿童，等于剥夺他们学习应对恐惧的机会。