Full Idea
Cantor's theories exhibited the contradictions others had claimed to derive from the supposition of infinite sets as confusions resulting from the failure to mark the necessary distinctions with sufficient clarity.
Gist of Idea
Cantor showed that supposed contradictions in infinity were just a lack of clarity
Source
report of George Cantor (works [1880]) by Michael Potter - Set Theory and Its Philosophy Intro 1
Book Reference
Potter,Michael: 'Set Theory and Its Philosophy' [OUP 2004], p.3