条件作用原理同样适用于所有物种。
The principles of conditioning apply equally to all species.
I think it's important to stay grounded and remember where you came from.
The world is a place of chaos and confusion, and the only way to make sense of it is to find your own path through it.
解释：不谦让， 就会不团结; 不团结， 就不可以出师远征。
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.
Opportunities are always reserved for those who are prepared.