Hooft, in a letter to Professor Barlæus, also expressed his opinion in the following words: "Vondel seems to grow tired of nothing sooner than of rest. It seems he must have saved up three hundred guldens more, which are causing him a good deal of embarrassment. And I do not know but that it might cost him even much dearer than this; for some hot-head might be tempted prematurely to lay violent hands upon him, thinking that not even a cock would crow his regret."
These productions, however, were only the prelude to a greater work that was to follow--his "Mysteries of the Altar," which was published in the autumn of 1645.
This poem was a glorification of the Mass, and was divided into three books. Vondel, in writing this able work, was assisted by the counsel of the most learned and the most profound men in the Catholic Church. The doctrines of Thomas Aquinas and other celebrated schoolmen, and the teachings of the best modern authorities were here poetically combined, and the poet was hailed on every side as the ablest defender of the tenets of the Church of Rome.
This poem provoked a celebrated reply by Jacob Westerbaen, one of the most noted of the School of Dort, who, while praising the art of the new champion of Catholicism, at the same time attacked his doctrinal position with such piercing analysis and with so great display of theological dogma, that, in the opinion of the Protestants, Vondel was ingloriously vanquished. The Catholics, of course, thought differently.
Jacob, Archbishop of Mechlin, to whom Vondel's poem was dedicated, sent the author a painting with which Vondel was at first greatly pleased. Learning, however, that it was only a bad copy, he gave it away to his sister, no longer wishing to have such a poor reward for so great an undertaking before his eyes.
A prose translation of the works of Virgil was the next thing that this indefatigable worker essayed. This version received the commendation of most of his contemporaries. Barlæus, indeed, found fault with it, saying that it was without life and marrow; adding, cynically, that Augustus would surely not have withheld this Maro from the flames. But, then, Barlæus was such a thorough Latinist that his own language seemed foreign to him. He would have had the translator preserve the peculiarities of the Latin at the expense of his native tongue. And, then, was he not also Vondel's rival for the hand of Tesselschade? Praise from him surely was not to be expected. The universal opinion was that it was a difficult work excellently done. This translation was also the forerunner of a drama. "Maria Stuart" was the name of the tragedy which the bard now offered for the perusal of his countrymen.