EUROPE, which carries the fate of the whole world, lives by a life which is in contrast to that of every other region, because that life, though intense, is inexhaustible. There is present, therefore, in her united history a dual function of maintenance and of change such as can be discovered neither in any one of her component parts nor in civilisations exterior to her own. Europe alone of all human groups is capable of transforming herself ceaselessly, not by the copying of foreign models, but in some creative way from within. She alone has the gift of moderating all this violent energy, of preserving her ancient life, and by an instinct whose action is now abrupt, now imperceptibly slow, of dissolving whatever products of her own energy may not be normal to her being.

These dual forces are not equally conspicuous: the force that preserves us is general, popular, slow, silent, and beneath us all; the force that makes us diversified and full of life shines out in peaks of action.

The agents and the manifestations of the conserving force do not commonly present themselves as the chief personalities and the most remarkable events of our long record. The agents and the manifestations of the force that perpetually transform us are arresting figures, and catastrophic actions. Those who keep us what we are, for the most part will never be known—they are millions. Those, on the other hand, who have brought upon our race its great novelties of mood or of vesture, the battles they have won, the philosophies they have framed and imposed, the polities they have called into existence, they and their works fill history. That power which has forbidden us to perish uses servants often impersonal or obscure; it is mostly to be discovered at work in the permanent traditions of the populace, and its effects are but rarely visible until they appear solid and established by a process which is rather that of growth than of construction. That power which keeps the mass moving glitters upon the surface of it and is seen.

There are, nevertheless, in this perennial and hidden task of maintaining Europe certain exceptional events of which the date is clear, the result immediate, and the authors conspicuous. Of early examples the victory of Constantine in the fourth century, the defeat of Abdul Rhaman in the eighth, may be cited. Among the lesser ones of later times is a decision which was taken in the middle of the eighteenth century by the French and Austrian Governments, and to which historians have given the name of theDiplomatic Revolution.

To comprehend or even to follow the career of Marie Antoinette it is essential to seize the nature and the gravity of that rearrangement of national forces, for it determined all her life. To the great alliance between France and Austria by which such a rearrangement was effected she owed every episode of her drama. Her marriage, her eminence, her sufferings, and her death were each directly the consequence of that compact: its conclusion coincided with her birth; from childhood she was dedicated to it as a pledge, a bond, and, at last