In the book Jonh 13:34,35 of Holy Bible Jesus says:
"A new commandment I give unto you, thay ye love one another; as I have loved you, that ye also love one another.
By this all will know that my disciples, if you love one another. "
So unfortunately today most people help each other based on their similarity of income, among other demographic factors, forgetting the love and size of the world around them. However, since both people can contribute their rational or abstract knowledge, society can become richer than it is, since different types of people interact with each other, forming blocks between them, that the measure which increase and connect, as if each block were a pixel of a photo, so the more pixels a photo becomes beautiful, the more blocks the society becomes beautiful and prosperous.