Why should you not hate anybody?

Question - Gurudev, why should you not hate anybody? 

Gurudev Sri Sri - If you keep thinking about happy people, you get happy. Thinking about unhappy things, you feel unhappy. That’s why I have said, “Don’t hate anybody.” Not for the sake of the person whom you hate, but for your own sake. Your own mind, your nervous system, will assume the form, shape, and color of that person. That is why we don’t hate anybody. Is this an intelligent thing to do or not? The most intelligent thing to do is not to hate anybody, because whomsoever you hate, you get those impressions embedded in you.