Can't agree with Amit Kalantri there. Love triumphs all. It's the purest, strongest, strangest and the most mysterious emotion of all. In fact, it is said that God is made of unconditional love.
Politeness, on the other hand, can be fake. There are quite a few people in history who were very polite on the outside and a serial killer on the inside. Had they had love for other people they wouldn't have gone on mindless killing.