We now come to a period marked by a still more vigorous assault upon the liberties of the Church of Scotland, and by a correspondingly vigorous opposition thereto on the part of the Scottish people. William Laud, who afterwards became Archbishop of Canterbury, began to exert his influence upon the religious life of both England and Scotland during the closing years of James's reign, but it was in the reign of Charles the First, who succeeded his father in 1625, that he came before the world in his sudden and so unfortunate greatness. History has left but little doubt in the mind of the careful student that Laud's deliberate purpose and persistent influence, both in England and in Scotland, were towards a revival of Romanism within the Church of which he was a prelate, or at least towards the creation of a high Anglicanism which would differ but little from the Romish system. Adroitly, and frequently concealing his real purpose, he labored to this end, and it is not too much to say that the vigorous and, at last, successful opposition to his plans in Scotland, saved the English Church from radical changes which it is clear he was prepared to introduce in the southern Kingdom when his desires for Scotland had been effected. England owes to Scotland the preservation of her Protestantism on two occasions: first, in the days of Knox, when the work of the sturdy Reformer prevented what must have taken place had a Catholic Scotland been prepared to join with Spain in the overthrow of Protestant England, and again when Scottish opposition effectively nipped in the bud Laud's plans for a Romish movement in both Kingdoms. The history of the movement under Laud it is only possible briefly to summarize. In 1629 Charles revived the subject, to which his father had devoted so much attention, of an improved service in the Church of Scotland, and wrote to the Scottish Bishops ordering them to press forward the matter of an improved liturgy with all earnestness. As a result, the draft of the Book of Common Prayer prepared in the reign of James was again brought to light and forwarded to Charles, and this would probably have been accepted and authorized for use but for Laud's influence. It however was too bald and simple to suit the ritualistic Archbishop, who persuaded the King that it would be entirely preferable to introduce into Scotland the English Prayer Book without change. Correspondence upon the matter was continued until 1633, when Charles, accompanied by Laud, visited Scotland for the purpose of being crowned, and also "to finish the important business of the Liturgy."