Abe Fortas,
Snyder v. Harris Gas Service Company…
“ When that determination has been made in accordance with the painstaking demands of Rule 23, there is authorized to be brought in the federal courts a single litigation, in which, both practically and in legal theory, the thing at stake, the 'matter in controversy,' is the total, combined, aggregated claim of the whole class. When that happens the courts do not obey, but violate, the jurisdictional statutes if they continue to impose ancient and artificial judicial doctrines to fragment what is in every other respect a single claim, which the courts are commanded to stand ready to hear. ”
