"The mystery of critical presentation…is the mystery of speculative, of Hegelian construction….
"If from real apples, pears, strawberries and almonds I form the general idea 'Fruit', if I go further and imagine that my abstract idea 'Fruit', derived from real fruit, is an entity existing outside me, is indeed the true essence of the pear, the apple, etc., then -- in the language of speculative philosophy –- I am declaring that 'Fruit' is the 'Substance' of the pear, the apple, the almond, etc. I am saying, therefore, that to be an apple is not essential to the apple; that what is essential to these things is not their real existence, perceptible to the senses, but the essence that I have abstracted from them and then foisted on them, the essence of my idea -– 'Fruit'…. Particular real fruits are no more than semblances whose true essence is 'the substance' -– 'Fruit'….
"Having reduced the different real fruits to the one 'fruit' of abstraction -– 'the Fruit', speculation must, in order to attain some semblance of real content, try somehow to find its way back from 'the Fruit', from the Substance to the diverse, ordinary real fruits, the pear, the apple, the almond etc. It is as hard to produce real fruits from the abstract idea 'the Fruit' as it is easy to produce this abstract idea from real fruits. Indeed, it is impossible to arrive at the opposite of an abstraction without relinquishing the abstraction….
"The main interest for the speculative philosopher is therefore to produce the existence of the real ordinary fruits and to say in some mysterious way that there are apples, pears, almonds and raisins. But the apples, pears, almonds and raisins that we rediscover in the speculative world are nothing but semblances of apples, semblances of pears, semblances of almonds and semblances of raisins, for they are moments in the life of 'the Fruit', this abstract creation of the mind, and therefore themselves abstract creations of the mind…. When you return from the abstraction, the supernatural creation of the mind, 'the Fruit', to real natural fruits, you give on the contrary the natural fruits a supernatural significance and transform them into sheer abstractions. Your main interest is then to point out the unity of 'the Fruit' in all the manifestations of its life…that is, to show the mystical interconnection between these fruits, how in each of them 'the Fruit' realizes itself by degrees and necessarily progresses, for instance, from its existence as a raisin to its existence as an almond. Hence the value of the ordinary fruits no longer consists in their natural qualities, but in their speculative quality, which gives each of them a definite place in the life-process of 'the Absolute Fruit'.
"The ordinary man does not think he is saying anything extraordinary when he states that there are apples and pears. But when the philosopher expresses their existence in the speculative way he says something extraordinary. He performs a miracle by producing the real natural objects, the apple, the pear, etc., out of the unreal creation of the mind 'the Fruit'….
"It goes without saying that the speculative philosopher accomplishes this continuous creation only by presenting universally known qualities of the apple, the pear, etc., which exist in reality, as determining features invented by him, by giving the names of the real things to what abstract reason alone can create, to abstract formulas of reason, finally, by declaring his own activity, by which he passes from the idea of an apple to the idea of a pear, to be the self-activity of the Absolute Subject, 'the Fruit.'
"In the speculative way of speaking, this operation is called comprehending Substance as Subject, as an inner process, as an Absolute Person, and this comprehension constitutes the essential character of Hegel's method." [Marx and Engels (1975), pp.72-75.]