It can be done! It is possible, but only on one condition – when we have a common goal. That is not hard to find, but it cannot be found on earth, because when we look at earthly things, we all have different goals. One wants a BMW, another a Mercedes and another a plane!
Therefore, the only common goal is a spiritual one. That is what can bring us together. We all come from different backgrounds but behind these backgrounds, is a concept of God. With a concept of God, it is possible to unite. With a concept of God, it is possible to find solutions for the world. When I see that a person, who is very different from me, is sincerely dedicated to God, and if I am also trying to be, then we can appreciate each other even though we are so different.
True brotherhood can be found when I see that my brother, who is different, is really trying to do something wonderful, and it is found when everyone tries to do something wonderful, something selfless. This is only possible through a spiritual solution.