Frantsuz olimlaridan biri, graf Anri Dekastri 1896-yilda "Islom" nomli kitobida yozgan:

One of the French learned writers Count Henri Decastri wrote in his book entitled ‘Islam’ in 1896,

“Men bilmayman, agar musulmonlar o‘rta asrlardagi hikoyalarni eshitib, xristian voizlarining cherkov madhiyalarida nima deganini tushunsalar, ular nima deb o‘ylashardi. Bizning barcha madhiyalarimiz, hatto 12-asrdan oldin paydo bo‘lganlari ham, salib yurishlariga sabab bo‘lgan bir g‘oyadan kelib chiqqan edi. Bu madhiyalar musulmonlarga nisbatan nafrat bilan to‘la edi, chunki ular islom dinini butunlay bilmasdan kuylangan edi. Ushbu madhiyalar va qo‘shiqlar natijasida odamlarning ongida o‘sha din haqidagi nafrat mustahkamlanib qoldi va noto‘g‘ri qarashlar chuqur ildiz otdi; ularning ba’zilari bugungi kunda ham davom etmoqda. Hamma musulmonlarni mushrik, kofir, butparast va murtad deb hisoblardi.”

“I cannot imagine what the Muslims would say if they heard the tales of the mediaeval ages and understood what the Christian orators used to say in their hymns; all our hymns even those which emerged before the 12th century emanated from one concept which was the cause of the crusades, these hymns were filled with hatred towards the Muslims due to the total ignorance of their religion. As a result of those hymns and songs, hatred against that religion became fixed in people’s minds, and the erroneous ideas deeply rooted, some of which are still carried nowadays. Everyone used to regard the Muslims as polytheists, disbelievers, idol worshippers and apostates.”.