The conservative instinct, and the conservative doctrine which is its consequence, are strengthened by superstition.  If the social structure, including the whole body of customs and opinions, is associated intimately

[10] 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 upsets 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, operating

[11] strongly, must have made change slow in communities which progressed, and hindered some communities from progressing at all.  But they have continued to operate more or less throughout history, obstructing knowledge and progress.  We can observe them at work to-day even in the most advanced societies, where they have no longer the power to arrest development or repress the publication of revolutionary opinions.  We still meet people who consider a new idea an annoyance and probably a danger.  Of those to whom socialism is repugnant, how many are there who have never examined the arguments for and against it, but turn away in disgust simply because the notion disturbs their mental universe and implies a drastic criticism on the order of things to which they are accustomed?  And how many are there who would refuse to consider any proposals for altering our imperfect matrimonial institutions, because such an idea offends a mass of prejudice associated with religious sanctions?  They may be right or not, but if they are, it is not their fault.  They are actuated by the same motives which were a bar to progress in primitive societies.  The existence of people of this mentality, reared in an atmosphere of freedom, side by side with others who are always looking out for new ideas and

[12] regretting that there are not more about, enables us to realize how, when public opinion was formed by the views of such men, thought was fettered and the impediments to knowledge enormous.