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.

The AdS/CFT correspondence is a powerful tool that bridges the gap between quantum field theory and gravity, offering insights into the nature of spacetime itself.

最大的悲剧不是死亡，而是被遗忘。

You must allow me to tell you how ardently I admire and love you.