Another kind of indirect expression of which wit makes use is _comparison_, which we have not discussed so far because an examination of comparison touches upon new difficulties, or rather it reveals difficulties which have made their appearance on other occasions. We have already admitted that in many of the examples examined we could not banish all doubts as to whether they should really be counted as witty, and have recognized in this uncertainty a serious shock to the principles of our investigation. But in no other material do I feel this uncertainty greater and nowhere does it occur more frequently than in the case of comparison-wit. The feeling which usually says to me—and I dare say to a great many others under the same conditions—this is a joke, this may be written down as witty before even the hidden and essential character of the wit has been uncovered—this feeling I lack most. If at first I experience no hesitation in declaring the comparison to be a witticism, then the next instant I seem to think that the pleasure I thus found was of a different quality than that which I am accustomed to ascribe to a joke. Also the fact that witty comparisons but seldom can evoke the explosive variety of laughter by which a good joke proves itself makes it impossible for me to cast aside the existing doubts, even when I limit myself to the best and most effective examples. It is easy to demonstrate that there are some especially good and effective examples of comparison which in no way give us the impression of witticisms. A beautiful example of this kind which I have not yet tired of admiring, and the impression of which still clings to me, I shall not deny myself the pleasure of citing. It is a comparison with which Ferd. Lassalle concluded one of his famous pleas (_Die Wissenschaft und die Arbeiter_): “A man like myself who, as I explained to you, had devoted his whole life to the motto ‘Die Wissenschaft und die Arbeiter’ (Science and the Workingman), would receive the same impression from a condemnation which in the course of events confronts him _as would the chemist, absorbed in his scientific experiments, from the cracking of a retort. With a slight knitting of his brow at the resistance of the material, he would, as soon as the disturbance was quieted, calmly continue his labor and investigations._” One finds a rich assortment of pertinent and witty comparisons in the writings of Lichtenberg (2 B. of the Göttingen edition, 1853). I shall take the material for our investigation from that source.