Evolution of man

 

As the first group of cells gathered to form a symbiotic relationship perhaps some of them argued that cells are individuals. At first maybe they grabbed their neighbor and took what they needed, clawing through their short existence in this world. At one point cells decided that their relationship was not adversarial. They actually worked better together, as one.  It was at this moment that the possibility of all we have become was realized, one of the most important moments of mankind's existence. 

So too must mankind unite in order to evolve. Only when we realize that mankind's potential and ultimate destiny will be achieved when we act as one will we evolve.
Nothing will stop us then.