The history of philosophy and the history of social science show with perfect clarity that there is nothing resembling “sectarianism” in Marxism, in the sense of its being a hidebound, petrified doctrine, a doctrine which arose away from the high road of the development of world civilisation.Lenin argues that Marxism, on the contrary, is a consistent theory resulting from the processing, critical re-interpretation and creative development of the best that human thought produced in the nineteenth century.
Dialectical materialism is the result of a radical creative transformation of Hegel's and Feuerbach's systems on the basis of a new interpretation of social and natural reality: Marx deepened and developed philosophical materialism to the full, and extended the cognition of nature to include the cognition of human society.
His historical materialism was a great achievement in scientific thinking.The ideas of the outstanding English economists, Adam Smith (1723–1790) and David Ricardo (1772–1823), who laid the foundations of the economic anatomy of bourgeois society and substantiated the labour theory of value, helped Marx and Engels to evolve the social philosophy of historical materialism.
[citation needed] A specific quote: "Marxist doctrine is omnipotent because it is true" (Russian: "Учение Маркса всесильно, потому что оно верно"), was widely used in both Soviet propaganda and educational literature as a motto.
[citation needed] In his book Revolutionary Strategy marxist theoretician Mike Macnair points to Chartism as the fourth source of marxism and links its omission by Lenin to "both the general loss of democratic-republican understanding in the Second International, and the specific political regression of the British labour movement after 1871".