自由如果不加限制的话，一定会导致强者对弱者的剥削。
解读：绝对的自由会让拥有更多资源、权力的强者肆意妄为，他们会凭借优势去压榨弱势群体，抢占利益。所以，用道德、法律来框定自由边界，是守护社会公平、保障弱者权益的必需。
I think the best stories are the ones that leave you with more questions than answers.
Every problem in mathematics is an opportunity to learn something new.
一八一四年，俄、奥、普联军兵临巴黎城下，理工学校学生要求参战。面临灭顶之灾的拿破仑却说：“我不愿为取金蛋杀掉我的老母鸡！”后来，这句名言被刻在巴黎理工学校梯型大教室的天花板正中心，一直激励着该校师生奋发好学。
Make no mistake about it: Computers process numbers - not symbols. We measure our understanding (and control) by the extent to which we can arithmetize an activity.
实现明天理想的唯一障碍是今天的疑虑。
I'm not afraid to take risks because I know that's where growth happens.