This is the keynote of the later history of the Italian cities. This it was, and not any real lack of patriotism, which made them choose a German emperor instead of an Italian king. There was no room at that time for the idea of Italian unity, as we now understand it: the nature of the people alone would have rendered such a thing impossible, even if we leave out of account the fact that Italy was the meeting-ground of the two great powers of the mediaeval world, the Pope and the Emperor. Italy then must have had two masters, or have been the slave of one. The same spirit of civic independence which caused the development of Ancient Greece by preventing the universal rule of one power, caused the Italians, under different conditions, to pit one master against another to attain the same end. Even Liutprand, the old historian of the tenth century, recognized this. In the first book of his "Historia" he says: "The Italians wish always to serve two masters, in order to restrain one by means of the terror with which the other inspires him."[57] By means of holding in their hands the balance of power they hoped to rule their rulers; and to attain this object was the only reason which ever prompted the cities to unite with any degree of harmony. Local independence was what they aimed at, and their shrewdness showed them the only possible means in that age of securing it. These results could hardly have been attained if society had remained such that the prominence of the local divisions was dependent on the prominence of the respective heads of these divisions; but the character of their local rulers once changed, and their powers in a great measure absorbed by the act of a strong central power, when that power fell to pieces it was much easier for the local divisions, as such, to increase their independence, and to utilize the advance they had made, by means of their more direct relation to the central power, to gain a position which they would enjoy in spite of the efforts alike of that power and of their old rulers. Such a position would not be reached except by means of great struggles and by passing through a period of great disintegration and of fierce internal strife between opposing factions, such as in the history of the Italian communes is represented by the dark period between the fall of the last of the Carlovingians and the election of the first German emperor as king of Italy; but once attained, the character of the people who accomplished it would ensure its permanence, as long as they retained those principles of independence which had made them victorious in the struggle. After this short discussion, in which we have traced the ultimate effects of the action of Charlemagne in changing the dukes into counts, let us look at another feature in the field of city government introduced by him, the new office of the _scabinus_ or city judge.