To such an extent did Louis carry his conscientious scruples and virtuous inflexibility, that, after the departure of his brothers, 'he called together all the officers of his household, exhorted them to lead sober and chaste lives, and said that, if any were afraid of failing in this duty, he was prepared to grant leave for their return to the West. Not one asked for this permission. But some time after St. Louis found that there were sixteen or seventeen who had not lived as they ought to have done; he dismissed them from his household, and would not pardon them for three or four months, until Easter of the following year.' [Footnote 32] [Footnote 32: Tillemont, vol. iii. p. 392.] We have no very definite or reliable information as to the numerical strength of the army after the desertion of the King's brothers, but there can be little doubt that it was unequal to the double task which Louis had set before him--the liberation of the Christian captives held by the Saracens, and the security of the Christians in Palestine and Syria. In his own heart Louis always brooded over another project which he did not openly proclaim; this was to snatch the Holy Sepulchre from the Mussulmans and once more establish the kingdom of Jerusalem:--his was one of those ardent natures which hope against hope. Twice he seemed on the point of realizing this dream: in 1250, Malek Hasser, the Sultan of Aleppo and Damascus, who was then at war with the Mameluke Emirs of Egypt, offered to restore the kingdom of Jerusalem if he would enter into active alliance with him against his enemies. The temptation was strong; but, on leaving Damietta, Louis had concluded a ten years' truce with the Emirs, who on their side had undertaken to set free all their Christian captives. {87} The agreement was at that time being carried out. Louis would not break his word to the Mussulmans, nor would he leave the Christians, whom he had promised to deliver, in captivity, and very probably exposed to a frightful massacre. He made answer to the Sultan of Damascus that he would call upon the Egyptian Emirs to fulfil their engagement without any further delay, and that, if they refused, he would willingly make war upon them. The Emirs did not refuse; they even set free a considerable number of the captives, but they still retained some thousands. Louis waited, negotiating slowly both with the Sultan of Damascus and the Egyptian Emirs. In 1252 the latter, being hard pressed by the enemy, applied in their turn to the King, offering to restore the ancient kingdom of Jerusalem with the exception of four places, to set free all their Christian captives, and to excuse the payment of the 200,000 livres still owing for the ransom. Louis accepted the offer, and a treaty was concluded at Cæsarea; but at the very time when it should have been carried out the Egyptian Emirs and the Sultan of Damascus changed their minds, forgot their differences, and united to attack the remnant of crusading