It had long been realized that the only secure basis for oligarchy is collectivism.
All past oligarchies have fallen from power either because they ossified or because they grew soft.
We are different from all the oligarchies of the past, in that we know what we are doing.
He did not see that the continuity of an oligarchy need not be physical, nor did he pause to reflect that hereditary aristocracies have always been shortlived, whereas adoptive organizations such as the Catholic Church have sometimes lasted for hundreds or thousands of years.
There are no more uses of "oligarchy" in the book.
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Many political theorists believe there is an iron law of oligarchy that all forms of organization will eventually develop tendencies to be ruled by the few.
This is, without discussion, the earliest-known occasion on which the Oligarchy was so designated.