Full Idea
The three medieval views on universals (realism, conceptualism and nominalism) reappear in the philosophy of maths as logicism, intuitionism and formalism.
Gist of Idea
Realism, conceptualism and nominalism in medieval universals reappear in maths as logicism, intuitionism and formalism
Source
Willard Quine (On What There Is [1948], p.14)
Book Reference
Quine,Willard: 'From a Logical Point of View' [Harper and Row 1963], p.14