The disagreement, along with the agreement on the positive reason on which they relied, is not what two people disagreed about. Rather, the disagreement occurred regarding what that reason is [Page 199 of the Cairo edition] and what that reason is called. Some say it is nature, some say it is eternity, and some say other than that, so all agreed in proving it. The necessity of its existence, and whether or not this disagreement harms them with this reliance. This is all from the knowledge of the people of this position. End of Part Seventeen, followed by Part Eighteen.