WHAT IS RIGHT AND WHAT IS WRONG??!!

Hi! Iam sure the title hints that this is going to start on a philosophical note or rather a spiritual one. Well i suggest read on only if your curious minds take you further. I earlier thought being right is always sticking to principles and ethics. But recently when I was having a discussion with a Swami, he changed or rather purified my theory of what is right and what is wrong. According to him right is something that is done for the benefit of others and then indirectly benefitting yourself, but at the same time the ultimate motive being the other person's wellbeing only. Well and wrong is something where only you benefit and nobody else does. Does it make sense?? Think about it. To make a long story short, being selfless is right and being selfish is ------. Well in that case we are all selfish. A selfless person gains happiness by being selfless. A person therefore cannot be selfless if he is not selfish. But again this kind of selfishness is tinged with unconditional love. When this kind of refining takes place in us, i think a person can guard himself from going Wrong!