It is the triumph of Milton's skill to have made his ideal world actual, if not to every English mind's eye, yet to a larger number of minds than have ever been reached by any other poetry in our language. Popular (in the common use of the word) Milton has not been, and cannot be. But the world he created has taken possession of the public mind. Huxley complains that the false cosmogony, which will not yield, to the conclusions of scientific research, is derived from the seventh, book of Paradise Lost, rather than, from Genesis. This success Milton owes partly to his selection of his subject, partly to his skill in handling it. In his handling, he presents his spiritual existences with just so much relief as to endow them with life and personality, and not with, that visual distinctness which would at once reveal their spectral immateriality, and so give a shock to the illusion. We might almost say of his personages that they are shapes, "if shape it might be called, that shape had none." By his art of suggestion by association, he does all he can to aid us to realise his agents, and at the moment when distinctness would disturb, he withdraws the object into a mist, and so disguises the incongruities which he could not avoid. The tact that avoids difficulties inherent in the nature of things, is an art which gets the least appreciation either in life or in literature.
But if we would have some measure of the skill which in Paradise Lost has made impossible beings possible to the imagination, we may find it in contrasting them with the incarnated abstraction and spirit voices, which we encounter at every turn in Shelley, creatures who leave behind them no more distinct impression than that we have been in a dream peopled with ghosts. Shelley, too,
Voyag'd th' unreal, vast, unbounded deep
Of horrible confusion.
Paradise Lost, x. 470.
and left it the chaos which he found it. Milton has elicited from similar elements a conception so life-like that his poetical version has inseparably grafted itself upon, if it has not taken the place of, the historical narrative of the original creation.
So much Milton has effected by his skilful treatment. But the illusion was greatly facilitated by his choice of subject. He had not to create his supernatural personages, they were already there. The Father, and the Son, the Angels, Satan, Baal and Moloch, Adam and Eve, were in full possession of the popular imagination, and more familiar to it than any other set of known names. Nor was the belief accorded to them a half belief, a bare admission of their possible existence, such as prevails at other times or in some countries. In the England of Milton, the angels and devils of the Jewish Scriptures were more real beings, and better vouched, than any historical personages could be. The old chronicles were full of lies, but this was Bible truth. There might very likely have been a Henry VIII, and he might have been such as he is described, but at any rate he was dead and gone, while Satan still lived and walked the earth, the identical Satan who had deceived Eve.
Nor was it only to the poetic public that his personages were real, true, and living beings. The poet himself believed as entirely in their existence as did his readers. I insist upon this point, because one of the first of living critics has declared of Paradise Lost that it is a poem in which every artifice of invention, is consciously employed, not a single fact being, for an instant, conceived as tenable by any living faith. (Ruskin, Sesame and Lilies, p. 138). On the contrary, we shall not rightly apprehend either the poetry or the character of the poet until we feel that throughout Paradise Lost, as in Paradise Regained and Samson, Milton felt himself to he standing on the sure ground of fact and reality. It was not in Milton's nature to be a showman, parading before an audience a phantasmagoria of spirits, which he himself knew to be puppets tricked up for the entertainment of an idle hour. We are told by Lockhart, that the old man who told the story of Gilpin Horner to Lady Dalkeith bonâ fide believed the existence of the elf. Lady Dalkeith repeated the tale to Walter Scott, who worked it up with consummate skill into the Lay of the Last Minstrel. This is a case of a really believed legend of diablerie becoming the source of a literary fiction. Scott neither believed in the reality of the goblin page himself, nor expected his readers to believe it. He could not rise beyond the poetry of amusement, and no poetry with only this motive can ever be more than literary art.
Other than this was Milton's conception of his own function. Of the fashionable verse, such as was written in the Caroline age, or in any age, he disapproved, not only because it was imperfect art, but because it was untrue utterance. Poems that were raised "from the heat of youth, or the vapours of wine, like that which flows at waste from the pen of some vulgar amourist, or the trencher fury of a rhyming parasite," were in his eyes treachery to the poet's high vocation.
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Poetical powers "are the inspired gift of God rarely bestowed … in every nation, and are of power, beside the office of a pulpit, to imbreed and cherish in a great people the seeds of virtue and public civility, to allay the perturbation of the mind, and set the affections in right tune; to celebrate in glorious and lofty hymns the throne and equipage of God's almightiness, and what he works, and what he suffers to be wrought with high providence in his church; to sing victorious agonies of martyrs and saints, the deeds and triumphs of just and pious nations, doing valiantly through faith against the enemies of Christ; to deplore the general relapses of kingdoms and states from justice and God's true worship."