In speaking of the identity of opposites in given conditions

In speaking of the identity of opposites in given conditions, what we are referring to is real and concrete opposites and the real and concrete transformations of opposites into one another. There are innumerable transformations in mythology, for instance, Kua Fu's race with the sun in Shan Hai Ching, [17] Yi's shooting down of nine suns in Huai Nan Tzu, [18] the Monkey King's seventy-two metamorphoses inHsi Yu Chi, [19] the numerous episodes of ghosts and foxes metamorphosed into human beings in the Strange Tales of Liao Chai, [20] etc. But these legendary transformations of opposites are not concrete changes reflecting concrete contradictions. They are naive, imaginary, subjectively conceived transformations conjured up in men's minds by innumerable real and complex transformations of opposites into one another. Marx said, "All mythology masters and dominates and shapes the forces of nature in and through the imagination; hence it disappears as soon as man gains mastery over the forces of nature." [21] The myriads of changes in mythology (and also in nursery tales) delight people because they imaginatively picture man's conquest of the forces of nature, and the best myths possess "eternal charm", as Marx put it; but myths are not built out of the concrete contradictions existing in given conditions and therefore are not a scientific reflection of reality. That is to say, in myths or nursery tales the aspects constituting a contradiction have only an imaginary identity, not a concrete identity. The scientific reflection of the identity in real transformations is Marxist dialectics.

Why can an egg but not a stone be transformed into a chicken? Why is there identity between war and peace and none between war and a stone? Why can human beings give birth only to human beings and not to anything else? The sole reason is that the identity of opposites exists only in necessary given conditions. Without these necessary given conditions there can be no identity whatsoever.