我思考历史的重量。
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.
A film is never really finished, it's just abandoned.
The purpose of computing is insight, not numbers.
Marine protected areas are not just sanctuaries; they are investments in our future.