Everyone wants a better life: very few of us want to be better people.
历史学家是回望过去的先知。
Children learn by watching their parents. Be someone they can admire.
聪明是一种天赋,善良是一种选择。
理解计算的极限与理解数学的极限同样重要。
就好像让人伏在剑刃上,而期望他能长寿一样。