The cardinal de Retz in his leisurely age at Commercy found amusement in presiding at disputations between the more moderate Cartesians and Don Robert Desgabets, who interpreted Descartes in an original way of his own.
The hardships of his imprisonment, and the long disputations at Oxford, told severely on his health, but he endured all with unbroken cheerfulness.
All this time he was preaching every day, writing homilies, disputations, lectures, and finding time to work hard at his great work the Summa Theologiae.
It was the town council which made arrangements for religious disputations, and provided for the housing and maintenance of the preachers.
He used often to organize formal disputations with Albigensian leaders, lasting a number of days.