Context: a detective explaining why a normal girl shouldn't have weird friends (it's the 20s, don't think too much about it).Young girls with advanced ideas, social, political, literary, what you will—in their case curious friends mean nothing! They are to be expected.
I understand the "advanced ideas" as having radical ideology, but what of "social, political, literary"? Does that mean having great social & political influence, as well as well-literate?
Source: The House of the Arrow