Thus our conception of free will and inevitability gradually diminishes or increases according to the greater or lesser connection with the external world, the greater or lesser remoteness of time, and the greater or lesser dependence on the causes in relation to which we contemplate a man's life.
So that if we examine the case of a man whose connection with the external world is well known, where the time between the action and its examination is great, and where the causes of the action are most accessible, we get the conception of a maximum of inevitability and a minimum of free will. If we examine a man little dependent on external conditions, whose action was performed very recently, and the causes of whose action are beyond our ken, we get the conception of a minimum of inevitability and a maximum of freedom.
In neither case—however we may change our point of view, however plain we may make to ourselves the connection between the man and the external world, however inaccessible it may be to us, however long or short the period of time, however intelligible or incomprehensible the causes of the action may be—can we ever conceive either complete freedom or complete necessity.
(1) To whatever degree we may imagine a man to be exempt from the influence of the external world, we never get a conception of freedom in space. Every human action is inevitably conditioned by what surrounds him and by his own body. I lift my arm and let it fall. My action seems to me free; but asking myself whether I could raise my arm in every direction, I see that I raised it in the direction in which there was least obstruction to that action either from things around me or from the construction of my own body. I chose one out of all the possible directions because in it there were fewest obstacles. For my action to be free it was necessary that it should encounter no obstacles. To conceive of a man being free we must imagine him outside space, which is evidently impossible.
(2) However much we approximate the time of judgment to the time of the deed, we never get a conception of freedom in time. For if I examine an action committed a second ago I must still recognize it as not being free, for it is irrevocably linked to the moment at which it was committed. Can I lift my arm? I lift it, but ask myself: could I have abstained from lifting my arm at the moment that has already passed? To convince myself of this I do not lift it the next moment. But I am not now abstaining from doing so at the first moment when I asked the question. Time has gone by which I could not detain, the arm I then lifted is no longer the same as the arm I now refrain from lifting, nor is the air in which I lifted it the same that now surrounds me. The moment in which the first movement was made is irrevocable, and at that moment I could make only one movement, and whatever movement I made would be the only one. That I did not lift my arm a moment later does not prove that I could have abstained from lifting it then. And since I could make only one movement at that single moment of time, it could not have been any other. To imagine it as free, it is necessary to imagine it in the present, on the boundary between the past and the future—that is, outside time, which is impossible.
(3) However much the difficulty of understanding the causes may be increased, we never reach a conception of complete freedom, that is, an absence of cause. However inaccessible to us may be the cause of the expression of will in any action, our own or another's, the first demand of reason is the assumption of and search for a cause, for without a cause no phenomenon is conceivable. I raise my arm to perform an action independently of any cause, but my wish to perform an action without a cause is the cause of my action.
