What thoughts might help us come together?

I like Albert Einstein's idea:

“A human being is a part of the whole, called by us Universe, a part limited in time and space. He experiences himself, his thoughts and feelings as something separated from the rest-a kind of optical delusion of his consciousness. This delusion is a kind of  prison, restricting us to our personal desires and to affection for a few persons nearest to us. Our task must be to free from this prison by widening our circle of compassion to embrace all living creatures and the whole nature in its beauty.”  

What is the nature of this prison?

Is it our sense of self, and our emotions and ideas, which have helped our ancestors and us survive?  Now that people are getting better and better at helping each other, would we be better off seeing ourselves as part of the whole of human society and part of nature?  Is our feeling of isolation, and our emotions such as anger and envy, unnecessary in a society where helping others is rewarded more than beating up on others?

Now that we have survived, might we examine closely what biologists mean by “survival of the fittest”.  Darwin originally meant those who survived "fit" in their environment, and those that "fit" in their environment survived.  Can we examine closely what it means to “fit” in our environment?  Are the "fittest" the strongest, meanest and best fighters able to force their will on others?  Or are the "fittest" those whose cells are successful caring for all their other cells?    Think of those who survive.  Their heart cells are successful pushing blood near all their other cells.  Think of their red blood cells.  Their red blood cells are successful delivering oxygen to all their other cells.  In those who survive and are healthy, all their cells are successful caring for all their other cells.  

Might people one day live in a society as successful as the society of their cells?  Might people one day care for each other as well as their cells care for each other?