These governments were in many respects one of the most interesting parts of the ancient system of Europe. Unfortunately for the repose of mankind, great states are compelled, by regard to their own safety, to consider the military spirit and martial habits of their people as one of the main objects of their policy. Frequent hostilities seem almost the necessary condition of their greatness; and, without being great, they cannot long remain safe. Smaller states exempted from this cruel necessity—a hard condition of greatness, a bitter satire on human nature—devoted themselves to the arts of peace, to the cultivation of literature, and the improvement of reason. They became places of refuge for free and fearless discussion; they were the impartial spectators and judges of the various contests of ambition which from time to time disturbed the quiet of the world. They thus became peculiarly qualified to be the organs of that public opinion which converted Europe into a great republic, with laws which mitigated, though they could not extinguish, ambition; and with moral tribunals to which even the most despotic sovereigns were amenable. If wars of aggrandizement were undertaken, their authors were arraigned in the face of Europe. If acts of internal tyranny were perpetrated, they resounded from a thousand presses throughout all civilized countries. Princes, on whose will there were no legal checks, thus found a moral restraint which the most powerful of them could not brave with absolute impunity. They acted before a vast audience, to whose applause or condemnation they could not be utterly indifferent. The very constitution of human nature, the unalterable laws of the mind of man, against which all rebellion is fruitless, subjected the proudest tyrants to this control. No elevation of power, no depravity however consummate, no innocence however spotless, can render man wholly independent of the praise or blame of his fellow-men.