This meeting caused a change of plan. Joliet showed the priests a map which he had made, of such parts of the Upper Lakes as he had visited, and gave them a copy of it; telling them, at the same time, of the Pottawattamies, and other tribes of that region, in grievous need of spiritual succor. The result was a determination on their part to follow the route which he suggested, notwithstanding the remonstrances of La Salle, who in vain reminded them that the Jesuits had pre-occupied the field, and would regard them as intruders. They resolved that the Pottawattamies should no longer sit in darkness; while, as for the Mississippi, it could be reached, as they conceived, with less risk by this northern route than by that of the south. Since reaching the head of Lake Ontario, La Salle had been attacked by a violent fever, from which he was not yet recovered. He now told his two colleagues that he was in no condition to go forward, and should be forced to part with them. The staple of La Salle's character, as his life will attest, was an invincible determination of purpose, which set at naught all risks and all sufferings. He had cast himself with all his resources into this enterprise, and, while his faculties remained, he was not a man to recoil from it. On the other hand, the masculine fibre of which he was made did not always withhold him from the practice of the arts of address, and the use of what Dollier de Casson styles _belles paroles_. He respected the priesthood,--with the exception, it seems, of the Jesuits,-- and he was under obligations to the Sulpitians of Montreal. Hence there can be no doubt that he used his illness as a pretext for escaping from their company without ungraciousness, and following his own path in his own way.