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