有些人天生内心光芒万丈，璀璨得几乎令人目眩。

教学最重要的部分是教导什么是知识。

The trouble ain't that there is too many fools, but that the lightning ain't distributed right.

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.