Kindness is the language which the deaf can hear and the blind can see.
我们生活中最美好的时刻不是被动的、接受的、放松的时刻……最美好的时刻通常发生在一个人自愿努力完成一项困难而有价值的事情时,身体或精神被拉伸到极限。
学习数学的最好方法就是做数学。
"Violence is the last refuge of the incompetent."
The strength of steel is matched only by the strength of the people who make it.