SET THEORY • FREE TRANSLATOR.ORG • Definition of Set theory

... sentences, though metrical, run straightforwardly, verb following subject, object verb, as in strict prose. In short here you have verse reduced to the order and structure of prose as nearly as a man of genius, working on a set theory, could reduce it while yet maintaining its proper emotional key. But first let me say that you will find very few like instances of success even in Wordsworth; and few indeed to set against innumerable passages wherein either his verse defies his theory and triumphs, or succumbs to it and, succumbing, ...

— On the Art of Writing - Lectures delivered in the University of Cambridge 1913-1914 • Arthur Quiller-Couch