Wikipedia;
"Vico's intellectual magnum opus is the book Scienza Nuova or New Science (1725), which attempts a systematic organization of the humanities as a single science that records and explains the historical cycles by which societies rise and fall."
The influence from Vico to James Joyce's Finnegans Wake:

Vico's notion of the lingua mentale commune (mental dictionary) in relation to universale fantastico reverberates in Joyce's novel, which ends in the middle of a sentence, reasserting Vico's principle of cyclical history.

Vico's historical explanation:
"Hence the "recurring" (ricorso) of life to "barbarism" (barbarie). It is by way of warning his age and those stemming from it of the danger of seeking truth in clear and distinct ideas blinding us to the real depths of life, that Vico calls our attention back to a classical art of moderating the course of human things, lest the liberty enjoyed in the "Republic" be supplanted by the anarchic tyranny of the senses."