Preparatory factors of the beliefs of crowds--The origin of the beliefs of crowds is the consequence of a preliminary process of elaboration-- Study of the different factors of these beliefs. 1. RACE. The predominating influence it exercises--It represents the suggestions of ancestors. 2. TRADITIONS. They are the synthesis of the soul of the race--Social importance of traditions--How, after having been necessary they become harmful--Crowds are the most obstinate maintainers of traditional ideas. 3. TIME. It prepares in succession the establishment of beliefs and then their destruction. It is by the aid of this factor that order may proceed from chaos. 4. POLITICAL AND SOCIAL INSTITUTIONS. Erroneous idea of their part--Their influence extremely weak--They are effects, not causes--Nations are incapable of choosing what appear to them the best institutions--Institutions are labels which shelter the most dissimilar things under the same title-- How institutions may come to be created--Certain institutions theoretically bad, such as centralisation obligatory for certain nations. 5. INSTITUTIONS AND EDUCATION. Falsity of prevalent ideas as to the influence of instruction on crowds-- Statistical indications--Demoralising effect of Latin system of education--Part instruction might play--Examples furnished by various peoples. Having studied the mental constitution of crowds and become acquainted with their modes of feeling, thinking, and reasoning, we shall now proceed to examine how their opinions and beliefs arise and become established. The factors which determine these opinions and beliefs are of two kinds: remote factors and immediate factors. The remote factors are those which render crowds capable of adopting certain convictions and absolutely refractory to the acceptance of others. These factors prepare the ground in which are suddenly seen to germinate certain new ideas whose force and consequences are a cause of astonishment, though they are only spontaneous in appearance. The outburst and putting in practice of certain ideas among crowds present at times a startling suddenness. This is only a superficial effect, behind which must be sought a preliminary and preparatory action of long duration. The immediate factors are those which, coming on the top of this long, preparatory working, in whose absence they would remain without effect, serve as the source of active persuasion on crowds; that is, they are the factors which cause the idea to take shape and set it loose with all its consequences. The resolutions by which collectivities are suddenly carried away arise out of these immediate factors; it is due to them that a riot breaks out or a strike is decided upon, and to them that enormous majorities invest one man with power to overthrow a government.