Is

• Foundation (1951)

• Foundation and Empire (1952)

• Second Foundation (1953)

too sassy of an answer?

Perhaps you would find it peculiar how "Dune" by Frank Herbert is an attempt to rewrite the Asimov's Foundation with proper account for the randomness of historical process. The Bene Gesserit is a more realistic Foundation with all its realistic ugly facets in full view. It is discussed on pages 58-59 here.