Internal mental events are irrelevant to the scientific study of behavior.
The good man is the man who， no matter how morally unworthy he has been， is moving to become better.
好人是那个，无论他以前有多么道德上不值得，都在努力变得更好的人。
The greatest gift you can give someone is your time.
Remember, if you ever need a helping hand, you'll find them at the end of each of your arms. As you grow older, you will discover that you have two hands, one for helping yourself, the other for helping others.