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.
在计算学习领域，关键不仅在于学习，而在于高效地学习。
A building should not just be seen, but experienced with all the senses.
要从最基本层面理解化学，我们必须观察分子中电子的舞蹈。#
The best decisions are often made at the intersection of data and intuition.