To Manipulate or Not To Manipulate
One theory says that if you treat people well, you’re more likely to encourage them to do what you want, making all the effort pay off. Do this, get that.
Another one, which I prefer, is that you might consider treating people with kindness merely because you can. Regardless of what they choose to do in response, this is what you choose to do. Because you can.
(via Seth’s Blog)