在数学中，提出问题的艺术必须比解决问题更有价值。

除非你付出努力，否则梦想不会实现。

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.

"Cinema is a way to look at the world, to understand it, and to change it."

A healthy forest ecosystem supports both nature and commerce.