Thus the foundation was laid of that terrible enmity which, inflamed by theological passion, was to convert the period of peace into a hell, to rend the Provinces asunder when they had most need of repose, and to lead to tragical results for ever to be deplored. Already in 1607 Francis Aerssens had said that the two had become so embroiled and things had gone so far that one or the other would have to leave the country. He permitted also the ridiculous statement to be made in his house at Paris, that Henry IV. believed the Advocate to have become Spanish, and had declared that Prince Maurice would do well to have him put into a sack and thrown into the sea. His life had been regularly divided into two halves, the campaigning season and the period of winter quarters. In the one his business, and his talk was of camps, marches, sieges, and battles only. In the other he was devoted to his stud, to tennis, to mathematical and mechanical inventions, and to chess, of which he was passionately fond, and which he did not play at all well. A Gascon captain serving in the States' army was his habitual antagonist in that game, and, although the stakes were but a crown a game, derived a steady income out of his gains, which were more than equal to his pay. The Prince was sulky when he lost, sitting, when the candles were burned out and bed-time had arrived, with his hat pulled over his brows, without bidding his guest good night, and leaving him to find his way out as he best could; and, on the contrary, radiant with delight when successful, calling for valets to light the departing captain through the corridor, and accompanying him to the door of the apartment himself. That warrior was accordingly too shrewd not to allow his great adversary as fair a share of triumph as was consistent with maintaining the frugal income on which he reckoned.