Full Idea
Quine has showed us how set theory - now recognised to be positively awash in Platonistic metaphysics - can and should be prevented from infecting logic proper.
Gist of Idea
Set theory is full of Platonist metaphysics, so Quine aimed to keep it separate from logic
Source
report of Willard Quine (works [1961]) by José A. Benardete - Metaphysics: the logical approach Intro
Book Reference
Benardete,José A.: 'Metaphysics: The Logical Approach' [OUP 1989], p.5