"The true power of science lies in its ability to unite us in our quest for knowledge."
Drones in the future will be as ubiquitous as smartphones are today.
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.
要求真，因为真，是这人世间完美之事的基本要素，也是所有善美的根源。
The purpose of mental activity is successful living.