孩子能独立活动时，父母可带领孩子一同认识世界。

"Experience is simply the name we give our mistakes."

Innovation requires both fundamental research and practical application.

写作是一种生活方式，一种存在于世界的方式。

Every man has a right to his own opinion, but no man has a right to be wrong in his facts.

"Every observation we make is a step closer to understanding the cosmos."

I always try to respect my opponents, because they make me better.

数学的艺术在于发现包含所有普遍性萌芽的特殊案例。