2
" Political realism refuses to identify the moral aspirations of a particular nation with the moral laws that govern the universe. As it distinguishes between truth and opinion, so it distinguishes between truth and idolatry. All nations are tempted — and few have been able to resist the power for long — to clothe their own aspirations and action in the moral purposes of the universe. To know that nations are subject to the moral law is one thing, while to pretend to know with certainty what is good and evil in the relations among nations is quite another. There is a world of difference between the belief that all nations stand under the judgment of God, inscrutable to the human mind, and the blasphemous conviction that God is always on one's side and that what one wills oneself cannot fail to be willed by God also.
The lighthearted equation between a particular nationalism and the counsels of Providence is morally indefensible, for it is that very sin of pride against which the Greek tragedians and the Biblical prophets have warned rulers and ruled. That equation is also politically pernicious, for it is liable to engender the distortion in judgment which, in the blindness of crusading frenzy, destroys nations and civilizations - in the name of moral principle, ideal, or God himself. "
― Hans J. Morgenthau , Politics Among Nations
3
" However much the theory of political realism may have been misunderstood and misinterpreted, there is no gainsaying its distinctive intellectual and moral attitude to matters political.
Intellectually, the political realist maintains the autonomy of the political sphere, as the economist, the lawyer, the moralist maintain theirs. He thinks in terms of interest defined as power, as the economist thinks in terms of interest defined as wealth; the lawyer, of the conformity of action with legal rules; the moralist, of the conformity of action with moral principles. The economist asks: "How does this policy affect the wealth of society, or a segment of it?" The lawyer asks: "Is this policy in accord with the rules of law?" The moralist asks: "Is this policy in accord with moral principles?" And the political realist asks: "How does this policy affect the power of the nation? "
― Hans J. Morgenthau , Politics Among Nations
6
" Political realism believes that politics, like society in general, is governed by objective laws that have their roots in human nature. In order to improve society it is first necessary to understand the laws by which society lives. The operation of these laws being impervious to our preferences, men will challenge them only at the risk of failure.
Realism, believing as it does in the objectivity of the laws of politics, must also believe in the possibility of developing a rational theory that reflects, however imperfectly and one-sidedly, these objective laws. It believes also, then, in the possibility of distinguishing in politics between truth and opinion — between what is true objectively and rationally, supported by evidence and illuminated by reason, and what is only a subjective judgment, divorced from the facts as they are and informed by prejudice and wishful thinking. "
― Hans J. Morgenthau , Politics Among Nations
11
" Neville Chamberlain's politics of appeasement were, as far as we can judge, inspired by good motives; he was probably less motivated by considerations of personal power than were many other British prime ministers, and he sought to preserve peace and to assure the happiness of all concerned. Yet his policies helped to make the Second World War inevitable, and to bring untold miseries to millions of men. Sir Winston Churchill's motives, on the other hand, were much less universal in scope and much more narrowly directed toward personal and national power, yet the foreign policies that sprang from these inferior motives were certainly superior in moral and political quality to those pursued by his predecessor. Judged by his motives, Robespierre was one of the most virtuous men who ever lived. Yet it was the utopian radicalism of that very virtue that made him kill those less virtuous than himself, brought him to the scaffold, and destroyed the revolution of which he was a leader. "
― Hans J. Morgenthau , Politics Among Nations
15
" Political realism is based upon a pluralistic conception of human nature. Real man is a composite of "economic man," "political man," "moral man," "religious man," etc. A man who was nothing but "political man" would be a beast, for he would be completely lacking in moral restraints. A man who was nothing but "moral man" would be a fool, for he would be completely lacking in prudence. A man who was nothing but "religious man" would be a saint, for he would be completely lacking in worldly desires.
Recognizing that these different facets of human nature exist, political realism also recognizes that in order to understand one of them one has to deal with it on its own terms. That is to say, if I want to understand "religious man," I must for the time being abstract from the other aspects of human nature and deal with its religious aspect as if it were the only one. Furthermore, I must apply to the religious sphere the standards of thought appropriate to it, always remaining aware of the existence of other standards and their actual influence upon the religious qualities of man. What is true of this facet of human nature is true of all the others. No modern economist, for instance, would conceive of his science and its relations to other sciences of man in any other way. It is exactly through such a process of emancipation from other standards of thought, and the development of one appropriate to its subject matter, that economics has developed as an autonomous theory of the economic activities of man. To contribute to a similar development in the field of politics is indeed the purpose of political realism. "
― Hans J. Morgenthau , Politics Among Nations
17
" The main signpost that helps political realism to find its way through the landscape of international politics is the concept of interest defined in terms of power. This concept provides the link between reason trying to understand international politics and the facts to be understood. It sets politics as an autonomous sphere of action and understanding apart from other spheres, such as economics (understood in terms of interest defined as wealth), ethics, aesthetics, or religion. Without such a concept a theory of politics, international or domestic, would be altogether impossible, for without it we could not distinguish between political and nonpolitical facts, nor could we bring at least a measure of systematic order to the political sphere.
We assume that statesmen think and act in terms of interest defined as power, and the evidence of history bears that assumption out. That assumption allows us to retrace and anticipate, as it were, the steps a statesman - past, present, or future - has taken or will take on the political scene. We look over his shoulder when he writes his dispatches; we listen in on his conversation with other statesmen; we read and anticipate his very thoughts. Thinking in terms of interest defined as power, we think as he does, and as disinterested observers we understand his thoughts and actions perhaps better than he, the actor on the political scene, does himself.
The concept of interest defined as power imposes intellectual discipline upon the observer, infuses rational order into the subject matter of politics, and thus makes the theoretical understanding of politics possible. On the side of the actor, it provides for rational discipline in action and creates that astounding continuity in foreign policy which makes American, British, or Russian foreign policy appear as an intelligible, rational continuum, by and large consistent within itself, regardless of the different motives, preferences, and intellectual and moral qualities of successive statesmen. "
― Hans J. Morgenthau , Politics Among Nations
18
" Human nature, in which the laws of politics have their roots, has not changed since the classical philosophies of China, India, and Greece endeavored to discover these laws. Hence, novelty is not necessarily a virtue in political theory, nor is old age a defect. The fact that a theory of politics, if there be such a theory, has never been heard of before tends to create a presumption against, rather than in favor of, its soundness. Conversely, the fact that a theory of politics was developed hundreds or even thousands of years ago - as was the theory of the balance of power - does not create a presumption that it must be outmoded and obsolete. A theory of politics must be subjected to the dual test of reason and experience. To dismiss such a theory because it had its flowering in centuries past is to present not a rational argument but a modernistic prejudice that takes for granted the superiority of the present over the past. To dispose of the revival of such a theory as a "fashion" or "fad" is tantamount to assuming that in matters political we can have opinions but no truths. "
― Hans J. Morgenthau , Politics Among Nations
