As all material objects are separated from one another by distance in space, spiritual objects are also separated from one another due to the difference in their inner properties. Something like this can be seen in our world. For example, two men have similar views, sympathize with one another, and no distance can influence the empathy between them. On the contrary, when their views are very different, they hate one another and no proximity can unite them.
Therefore, the similarity of views draws people together, while the differences separate them. If one person’s nature is absolutely opposite to the nature of the other, these people are as remote from one another as East is from West. The same occurs in the spiritual worlds: moving away, rapprochement, merging – all these processes happen only according to the difference or resemblance between the inner properties of the spiritual objects. The difference in properties separates them, while their similarity brings them closer.
Courtesy of http://www.youtube.com/watch?v=X7bK4Vee36M