"It is held by almost all historians of this period, including those who neither swear by Marxism nor apologise for Islam, that the Hindu failure had its source in the Hindu social system, particularly the caste structure. But that proposition does not stand a deeper probe. Moreover, the proposition is preposterous because it reverses the chronological sequence. The Hindu social system became moribund and the caste system rigid only after Hindus had lost political power. There is sufficient evidence to prove that on the eve of Islamic invasions, the Hindu social system did not harbour the defects which it developed at a later stage. It is my considered opinion that it was their highly organic social system which saved the Hindus from extinction in the initial stages, and provided the powerful impetus which propelled them to victory in the long run. Iran, Iraq, Syria, Egypt, and North Africa were engulfed by Islam because they did not have a social structure which could withstand the storm."