Professor Roell, of Franeker University, started from the Cocceian principle of freedom of thought. In his inaugural address, he announced it as his opinion, that Scriptures cannot be interpreted in any safe way except by the dictates of reason; that reason is the grand instrument by which we arrive at a knowledge of all truth; and that it is the great authority for the determination of all theoretical and practical religion. This author is best known to theologians by his ideas on the sonship of Christ. He held that Christ could not be a son, for then there would be a time when he came into being from nonentity. The term "son" could not signify unity of essence with the Father. "Brother" would be a more correct word. The only sense in which Christ could be son was as the divine ambassador. These assumptions brought upon Roell the charge that he was a Socinian and an Arminian. His principal opponent was Vitringa. Rationalistic tendencies increased in both number and force in proportion as the church decreased in the zeal which it had possessed at the close of the Cocceian and Voetian controversy by virtue of the immigration of the exiled Huguenots of France. Van Os, of Zwolle, attacked the accepted covenantal theory, and the doctrine of immediate imputation. The latter was a mere scholastic opinion, not accepted among the doctrines of the church, but yet maintained by the people as a requisite of orthodoxy. Having gone thus far, Van Os proceeded to deny a form of infralapsarianism, which was termed "justification from eternity." Many prominent but bigoted minds, having long entertained these ultra ideas he was endeavoring to refute, and some having gone so far as to attempt their introduction into a revised edition of the confession of faith, Van Os was censured for heresy. But he took the first opportunity to preach the Protestant doctrine that every one had the right to test the church-creed by the word of God. In the opinion of the people this course amounted to a total renunciation of the creed, and he was accordingly dismissed. Another dispute, which created attention and attracted the suspicion of the watchful church, was on toleration. All who dared to defend even the word, were stigmatized as unpardonable heretics, for Voltaire had just written in its favor. Pastor De Cock placed himself in danger of excommunication because he was so rash as to advocate it. He was only rescued by the interference of the government, and by luckily publishing that he distinguished between Christian and ecclesiastical toleration.