Our basis of morality ultimately stems back towards religion. Therefore, we can say that our morals are a religious aspect, and thus can change depending upon said religion. This is evident especially between what we define as the East and the West, where there is such a difference in cultures (mainly due to a lack of intermixing that is now becoming more prevalent). However, we see that most morals are similar between cultures, i.e. don't kill, don't steal, etc., etc. This generally translates as morals=being good. However, it is certainly possible to have, in a hypothetical sense, a world where evil is what is considered morally right. Because this is not so, I have to conclude that our idea of morals stems from an ingrained sense of wanting to be good.