The concept of computational efficiency is central to the design of learning algorithms.

翻译：懂得满足的人不会被利益束缚，注重内心修养的人，即便没有显赫地位也内心坦荡。

The universe is a vast and mysterious place, and we are just beginning to understand its secrets.

I'm the opposite of moderate, immaculately polished with the spirit of a hustler and the swagger of a college kid.

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.