But if time, as immediate consciousness perceives it, were, like space, a homogeneous medium, science would be able to deal with it, as it can with space. Now we have tried to prove that duration, as duration, and motion, as motion, elude the grasp of mathematics: of time everything slips through its fingers but simultaneity, and of movement everything but immobility. This is what the Kantians and even their opponents do not seem to have perceived: in this so-called phenomenal world, which, we are told, is a world cut out for scientific knowledge, all the relations which cannot be translated into simultaneity, i.e. into space, are scientifically unknowable.
And freedom would be incomprehensible. Kant's solution.
In the second place, in a duration assumed to be homogeneous, the same states could occur over again, causality would imply necessary determination, and all freedom would become incomprehensible. Such, indeed, is the result to which the Critique of Pure Reason leads. But instead of concluding from this that real duration is heterogeneous, which, by clearing up the second difficulty, would have called his attention to the first, Kant preferred to put freedom outside time and to raise an impassable barrier between the world of phenomena, which he hands over root and branch to our understanding, and the world of things in themselves, which he forbids us to enter.
How corrected by taking real duration into account.
But perhaps this distinction is too sharply drawn and perhaps the barrier is easier to cross than he supposed. For if perchance the moments of real duration, perceived by an attentive consciousness, permeated one another instead of lying side by side, and if these moments formed in relation to one another a heterogeneity within which the idea of necessary determination lost every shred of meaning, then the self grasped by consciousness would be a free cause, we should have absolute knowledge of ourselves, and, on the other hand, just because this absolute constantly commingles with phenomena and, while filling itself with them, permeates them, these phenomena themselves would not be as amenable as is claimed to mathematical reasoning,
With Kant, we assume a homogeneous space, the intuition of which is peculiar to man and prepares the way for social life.
So we have assumed the existence of a homogeneous Space and, with Kant, distinguished this space from the matter which fills it. With him we have admitted that homogeneous space is a "form of our sensibility": and we understand by this simply that other minds, e.g. those of animals, social life, although they perceive objects, do not distinguish them so clearly either from one another or from themselves. This intuition of a homogeneous medium, an intuition peculiar to man, enables us to externalize our concepts in relation to one another, reveals to us the objectivity of things, and thus, in two ways, on the one hand by getting everything ready for language, and on the other by showing us an external world, quite distinct from ourselves, in the perception of which all minds have a common share, foreshadows and prepares the way for social life.
But if concrete duration is heterogeneous, the relation of psychic state to act is unique and the act is rightly judged free.
Over against this homogeneous space we have put the self as perceived by an attentive consciousness, a living self, whose states, at once undistinguished and unstable, cannot be separated without changing their nature, and cannot receive a fixed form or be expressed in words without becoming public property. How could this self, which distinguishes external objects so sharply and represents them so easily by means of symbols, withstand the temptation to introduce the same distinctions into its own life and to replace the interpenetration of its psychic states, their wholly qualitative multiplicity, by a numerical plurality of terms which are distinguished from one another, set side by side, and expressed by means of words? In place of a heterogeneous duration whose moments permeate one another, we thus get a homogeneous time whose moments are strung on a spatial line. In place of an inner life whose successive phases, each unique of its kind, cannot be expressed in the fixed terms of language, we get a self which can be artificially reconstructed, and simple psychic states which can be added to and taken from one another just like the letters of the alphabet in forming words. Now, this must not be thought to be a mode of symbolical representation only, for immediate intuition and discursive thought are one in concrete reality, and the very mechanism by which we only meant at first to explain our conduct will end by also controlling it. Our psychic states, separating then from each other, will get solidified; between our ideas, thus crystallized, and our external movements we shall witness permanent associations being formed; and little by little, as our consciousness thus imitates the process by which nervous matter procures reflex actions, automatism will cover over freedom.[10] It is just at this point that the associationists and the determinists come in on the one side, and the Kantians on the other. As they look at only the commonest aspect of our conscious life, they perceive clearly marked states, which can recur in time like physical phenomena, and to which the law of causal determination applies, if we wish, in the same sense as it does to nature. As, on the other hand, the medium in which these psychic states are set side by side exhibits parts external to one another, in which the same facts seem capable of being repeated, they do not hesitate to make time a homogeneous medium and treat it as space. Henceforth all difference between duration and extensity, succession and simultaneity, is abolished: the only thing left is to turn freedom out of doors, or, if you cannot entirely throw off your traditional respect for it, to escort it with all due ceremony up to the supratemporal domain of "things in themselves," whose mysterious threshold your consciousness cannot cross. But, in our view, there is a third course which might be taken, namely, to carry ourselves back in thought to those moments of our life when we made some serious decision, moments unique of their kind, which will never be repeated —any more than the past phases in the history of a nation will ever come back again. We should see that if these past states cannot be adequately expressed in words or artificially reconstructed by a juxtaposition of simpler states, it is because in their dynamic unity and wholly qualitative multiplicity they are phases of our real and concrete duration, a heterogeneous duration and a living one. We should see that, if our action was pronounced by us to be free, it is because the relation of this action to the state from which it issued could not be expressed by a law, this psychic state being unique of its kind and unable ever to occur again. We should see, finally, that the very idea of necessary determination here loses every shred of meaning, that there cannot be any question either of foreseeing the act before it is performed or of reasoning about the possibility of the contrary action once the deed is done, for to have all the conditions given is, in concrete duration, to place oneself at the very moment of the act and not to foresee it. But we should also understand the illusion which makes the one party think that they are compelled to deny freedom, and the others that they must define it. It is because the transition is made by imperceptible steps from concrete duration, whose elements permeate one another, to symbolical duration, whose moments are set side by side, and consequently from free activity to conscious automatism. It is because, although we are free whenever we are willing to get back into ourselves, it seldom happens that we are willing. It is because, finally, even in the cases where the action is freely performed, we cannot reason about it without setting out its conditions externally to one another, therefore in space and no longer in pure duration. The problem of freedom has thus sprung from a misunderstanding: it has been to the moderns what the paradoxes of the Eleatics were to the ancients, and, like these paradoxes, it has its origin in the illusion through which we confuse succession and simultaneity, duration and extensity, quality and quantity.