Absolute and Relative Truth
From the standpoint of modern materialism, i.e., Marxism, the limits of approximation of our knowledge to objective, absolute truth are historically conditional, but the existence of such truth is unconditional, and the fact that we are approaching nearer to it is also unconditional. The contours of the picture are historically conditional, but the fact that this picture depicts an objectively existing model is unconditional. When and under what circumstances we reached, in our knowledge of the essential nature of things, the discovery of alizarin in coal tar or the discovery of electrons in the atom is historically conditional; but that every such discovery is an advance of “absolutely objective knowledge” is unconditional. In a word, every ideology is historically conditional, but it is unconditionally true that to every scientific ideology (as distinct, for instance, from religious ideology) there corresponds an objective truth, absolute nature. You will say that this distinction between relative and absolute truth is indefinite. And I shall reply: it is sufficiently “indefinite” to prevent science from becoming a dogma in the bad sense of the term, from becoming something dead, frozen, ossified; but at the same time it is sufficiently “definite” to enable us to dissociate ourselves in the most emphatic and irrevocable manner from fideism and agnosticism, from philosophical idealism and the sophistry of the followers of Hume and Kant. Here is a boundary which you have not noticed, and not having noticed it, you have fallen into the swamp of reactionary philosophy. It is the boundary between dialectical materialism and relativism.
We are relativists, proclaim Mach, Avenarius, Petzoldt. We are relativists, echo Mr. Chernov and certain Russian Machists, would-be Marxists. Yes, Mr. Chernov and Machist comrades – and therein lies your error. For to make relativism the basis of the theory of knowledge is inevitably to condemn oneself either to absolute scepticism, agnosticism and sophistry, or to subjectivism. Relativism as a basis of the theory of knowledge is not only recognition of the relativity of our knowledge, but also a denial of any objective measure or model existing independently of mankind to which our relative knowledge approximates. From the standpoint of naked relativism one can justify any sophistry; one may regard it as “conditional” whether Napoleon died on May 5, 1821, or not; one may declare the admission, alongside scientific ideology (“convenient” in one respect), of religious ideology (very “convenient” in another respect) to be a mere “convenience” for man or mankind, and so forth.
Dialectics – as Hegel in his time explained – contains an element of relativism, of negation, of scepticism, but is not reducible to relativism. The materialist dialectics of Marx and Engels certainly does contain relativism, but is not reducible to relativism, that is, it recognises the relativity of all our knowledge, not in the sense of denying objective truth, but in the sense that the limits of approximation of our knowledge to this truth are historically conditional.
V.I.Lenin, Materialism and Empirio-criticism: Critical Comments on a Reactionary Philosophy, Progress Publishers, Moscow, 1975, 120-121
Part seven/to be continued…