In Mexico, on the other hand, an interaction of native cultures had already occurred to some purpose; and the strange humanitarianism of the man-slaying priests, who made free public hospitals of part of their blood-stained temples, [332] suggests a possibility of esoteric mental culture among them. They had certainly gone relatively far in their moral code, as apart from their atrocious creed of sacrifice, even if we discount the testimony of the benevolent priest Sahagun; [333] and they had the beginnings of a system of education for the middle classes. [334] But unless one of the States which habitually warred for captives should have conquered the others--in which case a strong ruler might have put an end to the wholesale religious slaughter of his own subjects, as appears to have been done anciently in Mesopotamia--the priests in all likelihood would never have transcended their hideous hallucination of sacrifice. Their murdered civilization is thus the "great perhaps" of sociology; organized religion being the most sinister factor in the problem. § 9. THE COMMON FORCES OF DEGENERATION It is implied more or less in all the foregoing summaries that there is an inherent tendency in all systematized and instituted religion to degenerate intellectually and morally, save for the constant corrective activity of freethought. It may be well, however, to note specifically the forms or phases of the tendency. 1. Dogmatic and ritual religion being, to begin with, a more or less general veto on fresh thinking, it lies in its nature that the religious person is as such less intelligently alive to all problems of thought and conduct than he otherwise might be--a fact which at least outweighs, in a whole society, the gain from imposing a terrorized conformity on the less well-biassed types. Wherever conduct is a matter of sheer obedience to a superhuman code, it is ipso facto uncritical and unprogressive. Thus the history of most religions is a record of declines and reformations, each new affirmation of moral freethought ad hoc being in turn erected into a set of sheer commands. To set up the necessary ferment of corrective thought even for a time, there seems to be needed (a) a provocation to the intelligence, as in the spectacle of conflict of cults; and (b) a provocation to the moral sense and to self-interest through a burdensome pressure of rites or priestly exactions. An exceptional personality, of course, may count for much in the making of a movement; though the accident of the possession of kingly power by a reformer seems to count for much more than does genius. 2. The fortunes of such reactions are determined by socio-economic or political conditions. They are seen to be at a minimum, as to energy and social effect, in the conditions of greatest social invariability, as in ancient Egypt, where progress in thought, slow at best, was confined to the priestly and official class, and never affected popular culture.