It should not be difficult to see why Lotze uses different categories in describing the material of thought from those employed in describing its antecedent conditions, even though, according to him, the two are absolutely the same.[25] He has different _functions_ in mind. In one case, the material must be characterized as evoking, as incentive, as stimulus--from this point of view the peculiar feature of spatial and temporal arrangement in contrast with coherence or connection is emphasized. But in the other case the material must be characterized as affording stuff, actual subject-matter. Data are not only what is given _to_ thought, but they are also the food, the raw material, _of_ thought. They must be described as, on the one hand, wholly outside of thought. This clearly puts them into the region of sense perception. They are matters of _sensation_ given free from all inferring, judging, relating influence. Sensation is just what is _not_ called up in memory or in anticipated projection--it is the immediate, the irreducible. On the other hand, sensory-_matter_ is qualitative, and quales are made up on a common basis. They are degrees or grades of a common quality. Thus they have a certain ready-made setting of mutual distinction and reference which is already almost, if not quite, the effect of comparing, of relating, effects which are the express traits of thinking. It is easy to interpret this miraculous gift of grace in the light of what has been said. The data are in truth precisely that which is selected and set aside as present, as immediate. Thus they are _given_ to _further_ thought. But the selection has occurred in view of the need for thought; it is a listing of the capital in the way of the undisturbed, the undiscussed, which thought can count upon in this particular problem. Hence it is not strange that it has a peculiar fitness of adaptation for thought's further work. Having been selected with precisely that end in view, the wonder would be if it were not so fitted. A man may coin counterfeit money for use upon others, but hardly with the intent of passing it off upon himself.