with religious belief and is supposed to be under divine patronage, criticism of the social order savours of impiety, while criticism of the religious belief is a direct challenge to the wrath of supernatural powers.
The psychological motives which produce a conservative spirit hostile to new ideas are reinforced by the active opposition of certain powerful sections of the community, such as a class, a caste, or a priesthood, whose interests are bound up with the maintenance of the established order and the ideas on which it rests.
Let us suppose, for instance, that a people believes that solar eclipses are signs employed by their Deity for the special purpose of communicating useful information to them, and that a clever man discovers the true cause of eclipses. His compatriots in the first place dislike his discovery because they find it very difficult to reconcile with their other ideas; in the second place, it disturbs them, because it uspets an arrangement which they consider highly advantageous to their community; finally, it frightens them, as an offence to their Divinity. The priests, one of whose functions is to interpret the divine signs, are alarmed and enraged at a doctrine which menaces their power.
In prehistoric days, these motives, operat-
