Dialectical logic undoes the abstractions of formal logic and of transcendental philosophy, but it also denies the concreteness of immediate experience. To the extent to which this experience comes to rest with the things as they appear and happen to be, it is a limited and even false experience. It attains its truth if it has freed itself from the deceptive objectivity which conceals the factors behind the facts — that is, if it understands its world as a historical universe, in which the established facts are the work of the historical practice of man.
German philosopher, sociologist, and political theorist (1898–1979)
Herbert Marcuse (July 19, 1898 – July 29, 1979) was a prominent German-American philosopher and sociologist of the Frankfurt School.
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The contemporary mathematical and symbolic logic is certainly very different from its classical predecessor, but they share the radical opposition to dialectical logic. In terms of this opposition, the old and the new formal logic express the same mode of thought. it is purged from that “negative” which loomed so large at the origins of logic and of philosophic thought — the experience of the denying, deceptive, falsifying power of the established reality. And with the elimination of this experience, the conceptual effort to sustain the tension between “is” and “ought”, and to subvert the established universe of discourse in the name of its own truth is likewise eliminated from all thought which is to be objective, exact, and scientific. For the scientific subversion of the immediate experience which establishes the truth of science as against that of immediate experience does not develop the concepts which carry in themselves the protest and the refusal. The new scientific truth which they oppose to the accepted one does not contain in itself the judgment that condemns the established reality. … In contrast, dialectical thought is and remains unscientific to the extent to which it is such judgment.
The methods of logical procedure are very different in ancient and modem logic, but behind all difference is the construction of a universally valid order of thought, neutral with respect to material content. Long before technological man and technological nature emerged as the objects of rational control and calculation, the mind was made susceptible to abstract generalization. Terms which could be organized into a coherent logical system, free from contradiction or with manageable contradiction, were separated from those which could not. Distinction was made between the universal, calculable, “objective” and the particular, incalculable, subjective dimension of thought.
By virtue of the universal concept, thought attains mastery over the particular cases. However, the most formalized universe of logic still refers to the most general structure of the given, experienced world; the pure form is still that of the content which it formalizes. The idea of formal logic itself is a historical event in the development of the mental and physical instruments for universal control and calculability. In this undertaking man had to create theoretical harmony out of actual discord, to purge thought from contradictions, to hypostatize identifiable and fungible units in the complex process of society and nature. Under the rule of formal logic, the notion of the conflict between essence and appearance is expendable if not meaningless; the material content is neutralized; the principle of identity is separated from the principle of contradiction (contradictions are the fault of incorrect thinking); final causes are removed from the logical order. Well defined in their scope and function, concepts become instruments of prediction and control. Formal logic is thus the first step on the long road to scientific thought
In [Aristotle’s] formal logic, thought is organized in a manner very different from that of the Platonic dialogue. In this formal logic, thought is indifferent toward its objects. Whether they are mental or physical, whether they pertain to society or to nature, they become subject to the same general laws of organization, calculation, and conclusion — but they do so as fungible signs or symbols, in abstraction from their particular “substance.” This general quality (quantitative quality) is the precondition of law and order — in logic as well as in society — the price of universal control.
The supremacy of thought (consciousness) also pronounces the impotence of thought in an empirical world which philosophy transcends and corrects — in thought. The rationality in the name of which philosophy passed its judgments obtained that abstract and general purity” which made it immune against the world in which one had to live. With the exception of the materialistic “heretics,” philosophic thought was rarely afflicted by the afflictions of human existence. Paradoxically, it is precisely the critical intent in philosophic thought which leads to the idealistic purifications critical intent which aims at the empirical world as a whole, and not merely at certain modes of thinking or behaving within it. Defining its concepts in terms of potentialities which are of an essentially different order of thought and existence, the philosophic critique finds itself blocked by the reality from which it dissociates itself, and proceeds to construct a realm of Reason purged from empirical contingency. The two dimensions of thought — that of the essential and that of — the apparent truths — no longer interfere with each other, and their concrete dialectical relation becomes an abstract epistemological or ontological relation. The judgments passed on the given reality are replaced by propositions defining the general forms of thought, objects of thought, and relations between thought and its objects. The subject of thought becomes the pure and universal form of subjectivity, from which all particulars are removed.
At the classical origins of philosophic thought, the transcending concepts remained committed to the prevailing separation between intellectual and manual labor to the established society of enslavement. … Those who bore the brunt of the untrue reality and who, therefore, seemed to be most in need of attaining its subversion were not the concern of philosophy. It abstracted from them and continued to abstract from them.
Thought is led, by the situation of its objects, to measure their truth in terms of another logic, another universe of discourse. And this logic projects another mode of existence: the realization of the truth in the words and deeds of man. And inasmuch as this project involves man as societal animal,” the polis, the movement of thought has a political content. Thus, the Socratic discourse is political discourse inasmuch as it contradicts the established political institutions. The search for the correct definition, for the “concept” of virtue, justice, piety, and knowledge becomes a subversive undertaking, for the concept intends a new polis.
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Dialectical thought understands the critical tension between “is” and “ought” first as an ontological condition, pertaining to the structure of Being itself. However, the recognition of this state of Being — its theory — intends from the beginning a concrete practice. Seen in the light of a truth which appears in them falsified or denied, the given facts themselves appear false and negative.
The subversive character of truth inflicts upon thought an imperative quality. Logic centers on judgments which are, as demonstrative propositions, imperatives, — the predicative “is” implies an “ought.” … Verification of the proposition involves a process in fact as well as in thought: (S) must become that which it is. The categorical statement thus turns into a categorical imperative; it does not state a fact but the necessity to bring about a fact. For example, it could be read as follows: man is not (in fact) free, endowed with inalienable rights, etc., but he ought to be.
In the Platonic dialectic, … the terms “Being” “Non-being” “Movement,” “the One and the Many” “Identity” and “Contradiction” are methodically kept open, ambiguous, not fully defined. They have an open horizon, an entire universe of meaning which is gradually structured in the process of communication itself, but which is never closed. The propositions are submitted, developed, and tested in a dialogue, in which the partner is led to question the normally unquestioned universe of experience and speech, and to enter a new dimension of discourse — otherwise he is free and the discourse is addressed to his freedom. He is supposed to go beyond that which is given to him — as the speaker, in his proposition, goes beyond the initial setting of the terms. These terms have many meanings because the conditions to which they refer have many sides, implications, and effects which cannot be insulated and stabilized.
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Who is, in the classical conception, the subject that comprehends the ontological condition of truth and untruth? It is the master of pure contemplation (theoria), and the master of a practice guided by theoria, i.e., the philosopher-statesman. To be sure, the truth which he knows and expounds is potentially accessible to everyone. Led by the philosopher, the slave in Plato’s Meno is capable of grasping the truth of a geometrical axiom, i.e., a truth beyond change and corruption. But since truth is a state of Being as well as of thought, and since the latter is the expression and manifestation of the former, access to truth remains mere potentiality as long as it is not living in and with the truth. And this mode of existence is closed to the slave — and to anyone who has to spend his life procuring the necessities of life. Consequently, if men no longer had to spend their lives in the realm of necessity, truth and a true human existence would be in a strict and real sense universal. Philosophy envisages the equality of man but, at the same time, it submits to the factual denial of equality. For in the given reality, procurement of the necessities is the life-long job of the majority, and the necessities have to be procured and served so that truth (which is freedom from material necessities) can be. Here, the historical barrier arrests and distorts the quest for truth; the societal division of labor obtains the dignity of an ontological condition. If truth presupposes freedom from toil, and if this freedom is, in the social reality, the prerogative of a minority, then the reality allows such a truth only in approximation and for a privileged group. This state of affairs contradicts the universal character of truth, which defines and “prescribes” not only a theoretical goal, but the best life of man qua man, with respect to the essence of man. For philosophy, the contradiction is insoluble, or else it does not appear as a contradiction because it is the structure of the slave or serf society which this philosophy does not transcend. Thus it leaves history behind, unmastered, and elevates truth safely above the historical reality. There, truth is reserved intact, not as an achievement of heaven or in heaven, but as an achievement of thought — intact because its very notion expresses the insight that those who devote their lives to earning a living are incapable of living a human existence.