Be a pro. Back up your back up. Have at least one physical backup and one backup in the cloud. Have more than one of each. How much would you pay to retrieve all your data， photos， notes， if you lost them？ Backups are cheap compared to regrets.

创新不仅仅是创造新产品，更是重新思考我们做每件事的方式。

生活是老师，我是学生。

音乐是我与世界对话的方式。

λ演算本质上是一种纯粹抽象的函数理论。

【译文】 孔子说：“年轻人应该孝顺父母，尊敬师长，认真诚信，广施爱心，亲近仁人志士。能轻松做到这些，才可以从事理论研究。”