text:  That all our sensations come to be associated _in some way_ with this body and that some of them even come to be associated with it _in place_ is undeniable; but so far is it from being true that they are all essentially implicated or incorporated with it and cannot exist at a distance from it that we have a direct proof to the contrary in our sensations of vision; and until the physiologist can prove (what has never yet been proven) an _a priori_ necessity that our sensations must be where our bodies are and an _a priori_ absurdity in the contrary supposition he must excuse us for resolutely standing by the fact as we find it