The Jacobins do not in the least suspect their mysticism. On the contrary, they profess to be guided solely by pure reason. During the Revolution they invoked reason incessantly, and considered it as their only guide to conduct. The majority of historians have adopted this rationalist conception of the Jacobin mind, and Taine fell into the same error. It is in the abuse of rationalism that he seeks the origin of a great proportion of the acts of the Jacobins. The pages in which he has dealt with the subject contain many truths, however, and as they are in other ways very remarkable, I reproduce the most important passages here:-- ``Neither exaggerated self-love nor dogmatic reasoning is rare in the human species. In all countries these two roots of the Jacobin spirit subsist, secret and indestructible. . . . At twenty years of age, when a young man is entering into the world, his reason is stimulated simultaneously with his pride. In the first place, whatever society he may move in, it is contemptible to pure reason, for it has not been constructed by a philosophic legislator according to a principle, but successive generations have arranged it according to their multiple and ever-changing needs. It is not the work of logic, but of history, and the young reasoner shrugs his shoulders at the sight of this old building, whose site is arbitrary, whose architecture is incoherent, and whose inconveniences are obvious. . . . The majority of young people, above all those who have their way to make, are more or less Jacobin on leaving college. . . . Jacobinism is born of social decomposition just as mushrooms are born of a fermenting soil. Consider the authentic monuments of its thought--the speeches of Robespierre and Saint-Just, the debates of the Legislative Assembly and the Convention, the harangues, addresses, and reports of Girondists and Montagnards. Never did men speak so much to say so little; the empty verbiage and swollen emphasis swamp any truth there may be beneath their monotony and their turgidity. The Jacobin is full of respect for the phantoms of his reasoning brain; in his eyes they are more real than living men, and their suffrage is the only suffrage he recognises--he will march onward in all sincerity at the head of a procession of imaginary followers. The millions of metaphysical wills which he has created in the image of his own will sustain him by their unanimous assent, and he will project outwards, like a chorus of triumph and acclamation, the inward echo of his own voice.'' While admiring Taine's description, I think he has not exactly grasped the psychology of the Jacobin. The mind of the true Jacobin, at the time of the Revolution as now, was composed of elements which we must analyse if we are to understand its function.