We can begin to see human nature in terms of certain capacities to develop certain mental traits. I think we can go further than this and begin to discover universal aspects of these mental traits which are determined by human nature. I think we can find this in the area of morality. In fact I think they probably have a very high measure of agreement. That would be pathological.
Most people certainly try to offer moral justifications for what they do.
But there is also enormous diversity in what they do, and defend as right to do. We have the same genes today as people did then, but we are very different because there have been radical changes in diet. This is characteristic of every aspect of organic development. Hence we should not be in the least surprised to discover that it is also characteristic of our social nature, our moral positions and so on. We are biological creatures.