That was the so-called "balance of power." It was not a written law but for three centuries it has been obeyed as closely as are the laws of nature. The people who originated the idea maintained that Europe, in its nationalistic stage of development, could only survive when there should be an absolute balance of the many conflicting interests of the entire continent. No single power or single dynasty must ever be allowed to dominate the others. During the Thirty Years War, the Habsburgs had been the victims of the application of this law. They, however, had been unconscious victims. The issues during that struggle were so clouded in a haze of religious strife that we do not get a very clear view of the main tendencies of that great conflict. But from that time on, we begin to see how cold, economic considerations and calculations prevail in all matters of international importance. We discover the development of a new type of statesman, the statesman with the personal feelings of the slide-rule and the cash-register. Jan de Witt was the first successful exponent of this new school of politics. William III was the first great pupil. And Louis XIV with all his fame and glory, was the first conscious victim. There have been many others since.