It was fortunate for Dryden and for English literature that, just about this time, when he was beginning to be regarded as a veteran among the dramatists, whose farther services in that department the town could afford to spare, circumstances led him, almost without any wish of his own, into a new path of literature. He was now arrived at the ripe age of fifty years, and, if an inventory had been made of his writings, they would have been found to consist of twenty-one dramas, with a series of critical prose-essays for the most part bound up with these dramas, but nothing in the nature of non-dramatic poetry, except a few occasional pieces, of which the _Annus Mirabilis_ was still the chief. Had a discerning critic examined those works with a view to discover in what peculiar vein of verse Dryden, if he abandoned the drama, might still do justice to his powers, he would certainly have selected the vein of reflective satire. Of the most nervous and emphatic lines that could have been quoted from his plays a large proportion would have been found to consist of what may be called _maxim_ metrically expressed; while in his dramatic prologues and epilogues, which were always thought among the happiest efforts of his pen, the excellence would have been found to consist in very much the same power of direct didactic declamation applied satirically to the humours, manners, and opinions of the day. Whether any critic, observing all this, would have been bold enough to advise Dryden to take the hint, and quit the drama for satirical, controversial, and didactic poetry, we need not inquire. Circumstances compelled what advice might have failed to bring about. After some twenty years of political stagnation, or rather of political confusion, relieved only by the occasional cabals of leading statesmen, and by rumours of Catholic and Protestant plots, the old Puritan feeling and the general spirit of civil liberty which the Restoration had but pent up within the vitals of England broke forth in a regular and organized form as modern English Whiggism. The controversy had many ramifications; but its immediate phase at that moment was an antagonism of two parties on the question of the succession to the crown after Charles should die--the Tories and Catholics maintaining the rights of the Duke of York as the legal heir, and the Whigs and Protestants rallying, for want of a better man, round Charles's illegitimate son, the handsome and popular Duke of Monmouth, then a puppet in the hands of Shaftesbury, the recognised leader of the Opposition. Charles himself was forced by reasons of state to take part with his brother, and to frown on Monmouth; but this did not prevent the lords and wits of the time from distributing themselves pretty equally between the two parties, and fighting out the dispute with all the weapons of intrigue and ridicule. Shadwell, Settle, and some other minor poets, lent their pens to the Whigs, and wrote squibs and satires in the Whig service. Lee, Otway, Tate, and others, worked for the Court party. Dryden, as laureate and Tory, had but one course to take. He plunged into the controversy with the whole force of his genius; and in November, 1681, when the nation was waiting for the trial of Shaftesbury, then a prisoner in the Tower, he published his satire of _Absalom and Achitophel_, in which, under the thin veil of a story of Absalom's rebellion against his father David, the existing political state of England was represented from the Tory point of view. Among the characters portrayed in it Dryden had the satisfaction of introducing his old critic, the Duke of Buckingham, upon whom he now took ample revenge.