Servetus's challenge was not however without consequences. He had called Calvin into the lists, he had made him the champion of the doctrine of the Father, Son, and Holy Ghost; the opportunity of answering this challenge occurred twenty years later at Geneva. If the struggle had then been confined to a learned discussion between these two great minds, it would have been right enough; Servetus himself had challenged it. But the ideas of the times, from which Calvin (even while seeking a relaxation in the form) could not free himself, led to one of those distressing calamities, so frequent during a long series of ages in the annals of Rome, but of which, God be thanked! there is only this one instance in those of the Reformation. Calvin did not fight only with the tongue: he was then hurrying on the printing of his first theological work. It was the book written against those who said 'that the soul was only the motion of the lungs, and that if it had been endowed with immortality at the creation, it had been deprived of it by the fall.'[188] 'Let us put down those people,' he said, 'who murder souls without appearing to inflict any wounds:' and with this view he had composed a work on the _Immortality of the Soul_, the title given it in a letter he wrote to Fabri.[189] It is to be regretted that he afterwards substituted the rather awkward one of _Psychopannychia_, 'the night or sleep of the soul;' as the first indicates the subject more clearly. At the same time also he combated the opinion of those 'good men,' as he calls them,[190] who believed that the soul slept until the judgment-day. The first edition of this work, which bears the date of Paris 1534, came out probably immediately after Calvin had left that city or shortly before his departure. [Sidenote: CHARACTER OF CALVIN'S DIVINITY.]