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.

粮食尽量精，肉类尽量细。变质的东西不吃；变色的东西不吃，变味的东西不吃；烹饪得不好不吃；不是吃饭的时间不吃；切的不好看不吃；调味品不好不吃。肉类虽多，但不要吃过量。只有酒不限量，但不要喝醉。从集市上买来的酒肉不吃；每餐必有姜，但不多吃。

心理学家必须避免一切形式的心理化学。

You must be the change you wish to see in the world.