Courtesy costs nothing. Lower the toilet seat after use. Let the people in the elevator exit before you enter. Return shopping carts to their designated areas. When you borrow something， return it better shape (filled up， cleaned) than when you got it.

真相很少是纯粹的，也从不简单。

I don’t need anyone to complete me.

"Every story is a journey, and every journey changes the storyteller."

True innovation often comes from unexpected directions.

"Books are the keys to understanding the world and ourselves."