The dispossessed Viscount, Raymond Roger, having been put in prison by his conqueror in a tower of Carcassonne itself, died there at the end of three months, of disease according to some, and a violent death according to others; but the latter appears to be a groundless suspicion, for it was not to cowardly and secret crimes that Simon de Montfort was inclined.
From this time forth the war in Southern France changed character, or, rather, it assumed a double character; with the war of religion was openly joined a war of conquest; it was no longer merely against the Albigensians and their heresies, it was against the native princes of Southern France and their domains that the crusade was prosecuted.

Simon de Montfort was eminently qualified to direct and accomplish this twofold design: sincerely fanatical and passionately ambitious; of a valor that knew no fatigue; handsome and strong; combining tact with authority; pitiless towards his enemies as became his mission of doing justice in the name of the faith and the Church; a leader faithful to his friends and devoted to their common cause whilst reckoning upon them for his own private purposes, he possessed those natural qualities which confer spontaneous empire over men and those abilities which lure them on by opening a way for the fulfilment of their interested hopes.

And as for himself, by the stealthy growth of selfishness, which is so prone to become developed when circumstances are tempting, he every day made his personal fortunes of greater and greater account in his views and his conduct.

His ambitious appetite grew by the very difficulties it encountered as well as by the successes it fed upon.

The Count of Toulouse, persecuted and despoiled, complained loudly in the ears of the pope; protested against the charge of favoring the heretics; offered and actually made the concessions demanded by Rome; and, as security, gave up seven of his principal strongholds.