Political theory is neither purely historical nor purely scientific nor purely philosophical — it is all three, in carefully calibrated measure. Its nature is best understood not by fixing it within a single disciplinary boundary but by tracing the three dimensions that give it depth: history supplies its base, philosophy its direction, and science its method. Arnold Brecht’s warning bears repeating at the outset: “political philosophy, political theory, and political science are no longer interchangeable terms.” Conflating them does not simplify political theory — it empties it.
How Political Theory Differs from Political Thought, Philosophy, and Science
The three most common errors in approaching political theory are treating it as synonymous with political thought, reducing it to political philosophy, or collapsing it entirely into political science.
Political thought, strictly speaking, encompasses the collected works and opinions of numerous thinkers across time. Political theory is more disciplined than this — it is not a library but a method of investigation. Political philosophy, on the other hand, is the broader category: political theory constitutes a part of political philosophy, but a part can never substitute for the whole. Political philosophy is free to transcend the limits of scientific methods; political theory, when used in its modern scientific sense, operates under tighter methodological constraints.
Arnold Brecht draws the sharpest line here. When political theory is opposed to political philosophy, it “usually means scientific theory only.” Any speculative thesis from political philosophy can enter scientific political theory only as a “working hypothesis” — a provisional tool in the researcher’s kit, not yet established as scientific knowledge. When political theory is opposed to political science, on the other hand, it recovers its philosophical dimensions: the normative, the evaluative, the prescient.
The integrated picture that emerges is this: political theory is not all history, but it is history in a limited sense. It is not all philosophy, but it is philosophy in some degree. It is not all science, but it is science insofar as it responds to reason. A political theorist must therefore be part historian, part philosopher, and part scientist — none of these exclusively.
Political Theory as History
George Sabine was among the most emphatic advocates of the historical dimension of political theory. Yet the relationship requires careful framing: not all history is political theory, and not all political theory is history. The claim is more specific — that political theory without history is a structure without a base.
Professor L.S. Rathore articulates why. History is not merely a tale of the dead and buried. It is a storehouse of experience and wisdom, of successes and failures, of what has been achieved and what has been irreversibly lost. It is, simultaneously, the formation-ground of new development. To ignore history, Rathore warns, is to lose the delight of political theory entirely.
What History Does for Political Theory
History performs at least four distinct functions within political theory.
First, it defies what has lost value. No serious thinker today argues that the state is a divine creation or the product of a contract in some pre-political state of nature. History has quietly retired these claims by revealing the conditions that made them plausible — and the conditions that made them untenable.
Second, it conserves what has enduring significance. Concepts such as justice, liberty, equality, and political obligation did not arrive fully formed. They evolved through centuries of contestation, revision, and reaffirmation. Political theory holds these concepts in trust — inheriting them from history and transmitting them, refined, to future generations.
Third, history provides the context without which texts become unintelligible. The principle here is simple: one can never understand a text without its context. Plato’s communism and Marx’s communism share a word and almost nothing else. Their differences can only be grasped historically — by understanding the social formations, intellectual pressures, and political crises that each thinker was responding to. One’s age prompts and propels one’s political theory.
Fourth, history enables explanation. Through historical understanding, political theory can explain why institutions take the forms they do, why certain ideas gain traction at particular moments, and why others fade.
Sabine’s own framework for political theory rests on three factors that map directly onto this historical sensibility: a factual-historical factor (the facts on which political theory works), a causal factor (the circumstances in which it develops), and a valuational factor (the message it carries and the action it motivates). Professor S.P. Varma, writing in Modern Political Theory (1987), captures the paradox well: good political theory emerges from particular historical circumstances, yet carries “a significance for all times to come.” It is exactly this universal character, Varma argues, that makes political theory respectable.
This tension between historical particularity and universal significance becomes visible in India’s constitutional experience. The Constituent Assembly debates of 1946–49 were saturated with historical consciousness — of colonial domination, of Partition, of caste violence, of the failures of liberal constitutionalism elsewhere. B.R. Ambedkar and his colleagues were not writing in a vacuum; they were writing against a specific history and for a specific future. Yet the principles they embedded — constitutional morality, fraternity, social justice — have acquired significance well beyond their historical moment.
Political Theory as Philosophy
Leo Strauss, in “What is Political Philosophy?” (Journal of Politics, 1967), provides the clearest account of the philosophical dimension. His definition of political theory as philosophy is precise: “the attempt truly to know both the nature of political things and the right, or the good, political order.” This is not mere description. It is the attempt to move from opinion to knowledge.
The distinction matters. Politics, Strauss insists, is not what one assumes or opines. The political theorist is expected to possess more than assumption or opinion — they must have knowledge. Philosophy, in this sense, emerges when opinion attains the heights of knowledge. Political theory as philosophy is therefore “the attempt to replace opinion about the nature of political things by knowledge of the nature of political things.”
Kant’s three questions — What can I know? What must I do? What can I hope for? — define the philosophical horizon within which political theory operates. Without philosophy, political theory loses its evaluative capacity: its ability to judge, to prescribe, to persuade. Without an eye on the future, no present can afford to remain static.
The Overlooked Function: Persuasion
Strauss makes a point that is easy to underestimate. Values, he insists, are indispensable to political theory as they are to philosophy. The role of the political philosopher includes not only analysis but teaching and persuasion. What modern writers sometimes dismiss as the “folklore of political philosophy” or mere “ideology” is, on this account, vital for understanding political theory’s social function.
This introduces a dimension that the strictly scientific view of political theory tends to suppress: political theory does not only explain, it also affects — favourably or adversely. The evaluational aspects of political activity are as important as the factual aspects. Values and facts form an integral part of any serious political theory.
This basic framework, however, conceals several contested assumptions. The question of whether political theory can be both evaluative and objective — whether it can make normative claims while maintaining intellectual rigour — has been one of the most contested in twentieth-century political thought. The behaviouralist movement of the 1950s and 1960s answered in the negative, insisting that rigorous political science must strip itself of value judgements. The recovery of normative theory through Rawls’s A Theory of Justice (1971) demonstrated, decisively, that this was a false choice.
Political Theory as Science
The scientific aspiration in political theory has a distinct lineage. Arthur Bentley’s The Process of Government (1908), George Catlin’s The Science and Method of Politics (1927), David Easton’s The Political System (1953), and Robert Dahl’s Modern Political Analysis (1963) each, in different ways, pushed for a more rigorous, empirical, and systematic study of politics. Their collective influence shaped the behaviouralist revolution in American political science.
The caveat, again, is essential: not all science is political theory, and not all political theory is science.
Why Political Theory Is Not Science in the Natural-Science Sense
Political theory is not science in the same sense as chemistry, physics, or mathematics. It lacks universally recognised laws, clear cause-and-effect relationships, controlled laboratory conditions, and the predictive precision of the natural sciences. Recognising this is not an admission of failure — it is an accurate account of what kind of inquiry political theory actually is.
Colin Hay, in Political Analysis (2002), identifies the key asymmetry: “the nature of the ‘economic’ and the ‘political’ is different after Keynes and Marx in a way that the ‘physical’ and the ‘natural’ is not after Newton and Einstein.” In natural sciences, the rules of the game do not change with time; the laws of physics pertain to all situations across history. In social sciences, the rules change — and political theory must change with them.
R. Bhaskar’s analysis in The Limits of Naturalism (1979) makes this structural difference precise:
| Characteristic | Social Sciences | Natural Sciences |
| Independence from activities | Structures do NOT exist independently of the activities they govern | Structures exist independently |
| Agent’s conceptions | Structures do NOT exist independently of what agents think they are doing | Structures exist independently of conceptions |
| Endurance | Structures may be only relatively enduring | Structures are permanently enduring |
In What Sense Political Theory Is Scientific
Political theory is scientific insofar as it admits concepts and norms that are observable and testable, responds to the requirements of reason and rationalism, and draws its conclusions after study, observation, and systematic analysis. Hay’s conclusion is measured: political theory as science generates “neutral, dispassionate, and objective knowledge” — but within the constraints of social science, not natural science.
The American behaviouralists, in their enthusiasm for scientific rigour, pushed this too far. Their reductionism — the attempt to model political science entirely on the natural sciences — ultimately impoverished the discipline by evacuating precisely the values, historical context, and philosophical reflection that give political theory its depth. Science should help understand political phenomena; it should not eliminate political theory in the process. The limits of political theory, in the end, are worked out within the ethics of political analysis — not outside it.
Key Takeaways
- Political theory is distinct from political thought (broader and less disciplined), political philosophy (of which theory is a part), and political science (which restricts itself to scientific methods).
- Arnold Brecht’s warning stands: these three terms are no longer interchangeable in modern usage.
- As history, political theory provides contextual grounding, conserves enduring concepts like justice and liberty, and enables explanation — while retaining universal significance beyond its particular origins.
- As philosophy, political theory moves from opinion to knowledge, supplies evaluative and normative direction, and performs a function of teaching and persuasion.
- As science, political theory generates objective, testable knowledge — but only within the inherent limits of social science, not the exactitude of natural science.
- Sabine’s three-factor framework — factual-historical, causal, and valuational — maps these three dimensions onto a coherent methodological structure.
- Reductionism (reducing political theory to science alone) and antiquarianism (reducing it to history alone) are equally distorting. The discipline requires all three dimensions in balance.
