智者从敌人那里学到的比愚者从朋友那里学到的还要多。
"The wise man learns more from his enemies than the fool from his friends."
人们不会使用手持计算器来学习计算，但是却会忘记算术。
The best way to predict the future is to create it.
技术应该服务于进步和保护。