The miracles of the prophets are impostures, based on trickery, or the stories regarding them are lies. Custom, tradition, and intellectual laziness lead men to follow their religious leaders blindly. Religions have been the sole cause of the bloody wars that have ravaged mankind. Religions have also been resolutely hostile to philosophical speculation and to scientific research. The people who gather round the religious leaders are either feeble-minded, or they are women and adolescents.
Religion stifles truth and fosters enmity.
Certainly the precepts of Muslim law, such as the prohibition of wine, did not trouble him in the least. Finally, Ar Razi believed in scientific and philosophical progress, that the sciences progressed from generation to generation. He held that one must keep an open mind, and not reject empirical observations simply because they do not fit into one's preconceived scheme of things. Ar Razi believed that his own contributions to the sciences would be superseded by even greater minds than his. It is clear from the preceding account that Ar Razi's criticisms of religion are the most forceful that appeared in the entire Middle Ages, whether European or Islamic.