Culture is what we do together, not just what we consume.

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.

在浩瀚的宇宙中，我们只是一粒尘埃，但我们的好奇心却是无限的。

The state is the most important institution in human history.