A striking proof that resemblance does not necessarily imply plagiarism. Milton's affinity to Calderon has been overlooked by his commentators; but four luminaries have been named from which he is alleged to have drawn, however sparingly, in his golden urn--Caedmon, the Adamus Exul of Grotius, the Adamo of the Italian dramatist Andreini, and the Lucifer of the Dutch poet Vondel. Caedmon, first printed in 1655, it is but barely possible that he should have known, and ere he could have known him the conception of "Paradise Lost" was firmly implanted in his mind. External evidence proves his acquaintance with Grotius, internal evidence his knowledge of Andreini: and small as are his direct obligations to the Italian drama, we can easily believe with Hayley that "his fancy caught fire from that spirited, though irregular and fantastic composition." Vondel's Lucifer--whose subject is not the fall of Adam, but the fall of Satan--was acted and published in 1654, when Milton is known to have been studying Dutch, but when the plan of "Paradise Lost" must have been substantially formed. There can, nevertheless, be no question of the frequent verbal correspondences, not merely between Vondel's Lucifer and "Paradise Lost," but between his Samson and "Samson Agonistes." Milton's indebtedness, so long ago as 1829, attracted the attention of an English poet of genius, Thomas Lovell Beddoes, who pointed out that his lightning-speech, "Better to reign in hell than serve in heaven," was a thunderbolt condensed from a brace of Vondel's clumsy Alexandrines, which Beddoes renders thus:-- "And rather the first prince at an inferior court Than in the blessed light the second or still less."