老年最好的盔甲就是追求完美、没有虚度的一生。
Fairy tales are more than true: not because they tell us that dragons exist, but because they tell us that dragons can be beaten.
真正的危险不是计算机开始像人一样思考,而是人开始像计算机一样思考。
Efficiency is doing things right; effectiveness is doing the right things.