On his arrival at Quebec, Laval learned with deep grief that a terrible conflagration had, a few weeks before, consumed almost the whole of the Lower Town. The houses, and even the stores being then built of wood, everything was devoured by the flames. A single dwelling escaped the disaster, that of a rich private person, M. Aubert de la Chesnaie, in whose house mass was said every Sunday and feast-day for the citizens of the Lower Town who could not go to the parish service. To bear witness of his gratitude to Heaven, M. de la Chesnaie came to the aid of a good number of his fellow-citizens, and helped them with his money to rebuild their houses. This fire injured the merchants of Montreal almost as much as those of Quebec, and the _Histoire de l'Hôtel-Dieu_ relates that "more riches were lost on that sad night than all Canada now possesses."
The king had the greatest desire for the future reign of harmony in the colony; accordingly he enjoined upon M. de Meulles to use every effort to agree with the governor-general: "If the latter should fail in his duty to the sovereign, the commissioner should content himself with a remonstrance and allow him to act further without disturbing him, but as soon as possible afterwards should render an account to the king's council of what might be prejudicial to the good of the state." Mgr. de Laval, to whom the prince had written in the same tenor, replied at once: "The honour which your Majesty has done me in writing to me that M. de Meulles has orders to preserve here a perfect understanding with me in all things, and to give me all the aid in his power, is so evident a mark of the affection which your Majesty cherishes for this new Church and for the bishop who governs it, that I feel obliged to assure your Majesty of my most humble gratitude. As I do not doubt that this new commissioner whom you have chosen will fulfil with pleasure your commands, I may also assure your Majesty that on my part I shall correspond with him in the fulfilment of my duty, and that I shall all my life consider it my greatest joy to enter into the intentions of your Majesty for the general good of this country, which constitutes a part of your dominions." Concord thus advised could not displease a pastor who loved nothing so much as union and harmony among all who held the reins of power, a pastor who had succeeded in making his Church a family so united that it was quoted once as a model in one of the pulpits of Paris. If he sometimes strove against the powerful of this earth, it was when it was a question of combating injustice or some abuse prejudicial to the welfare of his flock. "Although by his superior intelligence," says Latour, "by his experience, his labours, his virtues, his birth and his dignity, he was an oracle whose views the whole clergy respected, no one ever more distrusted himself, or asked with more humility, or followed with more docility the counsel of his inferiors and disciples.... He was less a superior than a colleague, who sought the right with them and sought it only for its own sake. Accordingly, never was prelate better obeyed or better seconded than Mgr. de Laval, because, far from having that professional jealousy which desires to do everything itself, which dreads merit and enjoys only despotism, never did prelate evince more appreciative confidence in his inferiors, or seek more earnestly to give zeal and talent their dues, or have less desire to command, or did, in fact, command less." The new governor brought from France strong prejudices against the bishop; he lost them very quickly, and he wrote to the minister, the Marquis de Seignelay: "We have greatly laboured, the bishop and I, in the establishment of the parishes of this country. I send you the arrangement which we have arrived at concerning them. We owe it to the bishop, who is extremely well affected to the country, and in whom we must trust." The minister wrote to the prelate and expressed to him his entire satisfaction in his course.