“”The great basic thought”, Engels writes, “that the world is not to be comprehended has a complex of ready-made things, but as a complex of processes, in which the things apparently stable no less than their mind images in our heads, the concepts, go through an uninterrupted change of coming into being and passing away… this great fundamental thought has, especially since the time of Hegel, so thoroughly permeated ordinary consciousness that in this generality it is now scarcely ever contradicted. But to acknowledge this fundamental thought in words and to apply it in reality in detail to each domain of investigation are two different things… For dialectical philosophy nothing is final, absolute, sacred. It reveals the transitory character of everything and in everything; nothing can endure before it except the uninterrupted process of becoming and of passing away, of endless ascendency from the lower to the higher. And dialectical philosophy itself is nothing more than the mere reflection of this process in the thinking brain”. Thus, according to Marx, dialectics is “the science of the general laws of motion, both of the external world and of human thought”  (F. Engels, ‘Ludwig Feuerbach and the End of Classical German Philosophy” (see Marx and Engels, Selected Works, vol II, Moscow, 1962, pp. 387-88, 363, 387)). This revolutionary aspect of Hegel’s philosophy was adopted and developed by Marx” [V.I. Lenin, Karl Marx] [in Lenin, The Three Sources and Three Component Parts of Marxism –  Karl Marx – Frederick Engels, 1969]