In order for their beauty to be more complete, things diverse among themselves should manifest a certain contrast, a certain opposition.
There is [in the Catholic Church] a magnificent contrast between the Pope, who is at the pinnacle of power and before whom all kneel, and a humble lay brother, who would protest were anyone to kneel before him.
This opposition is filled with harmony. It is precisely in this contrast, this extreme of antagonistic aspects, that variety is clothed in all of its richness.
[Nobility.org Translation]
1: The Laws Of Variety