Human Nature in Summary

So, summarizing human nature, a somewhat difficult problem. Part of the reason it is so difficult to sum up is because our nature seems divided, almost to the point of classifying humans as a species insane. We are self-centered, and yet will donate large sums of money to help others. We strive for peace between nations, yet incite violence with them. Human nature seems partly to be that we always have the full range of emotions and personalities within us, and that as a species, we display that entire range all at once, creating an environment that prevents us from ever really figuring out what our nature is. Maybe our nature is to never know our nature, because you can never know everything, and our natures seem to encompass everything. We really are an odd species.