Lecture VI
An intelligent, astute man makes a comparison, but it is invalid; his thinking is not sufficiently mobile, not sufficiently alive to find a valid one; he stumbles, with serious consequence. Had he not been misled into thinking that dividing a worm in two could be compared to dividing a triangle in two, he would have stayed on the right course. Dividing a worm into two parts has nothing whatever to do with two souls. One and the same group is effective in both parts. One could compare it with someone looking at his image in a mirror. If the mirror is broken in two, he has two images; yet he himself remains whole. Not the person but the mirror has become divided. Likewise the worm soul cannot be divided; it endures as does the person who sees two images of himself in the mirrors. Thus one and the same soul is present in the two parts of the worm; that is the true concept corresponding to the reality. That concept Brentano could not reach; his thinking was not mobile enough and had become deluded by a false comparison. Had he made the comparison correctly, he would have noticed as he divided the triangle that the mere act of dividing does not guarantee that the result will be two triangles. In order to get that result something else must be added, namely, the concept triangle, which is to be applicable to both parts after the division. Without the concept the result may require two different concepts; i.e., that of quadrangle as well as that of triangle. The comparison could have been valid if it had occurred to him that he had to use one and the same concept for both parts, and that it was this concept that guaranteed the division would result in two triangles. It did not occur to him, consequently he did not recognize that one and the same worm soul was effective in both pieces of worm, effective in the sense that it looked into the parts from outside, like someone looking into two mirrors.