Page:Aristotelous peri psuxes.djvu/192

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CHAPTER XI.

LET us now consider the motor power in such imperfect creatures as have only the sense of Touch; and learn whether or not it is admissible that imagination and desire can be present with them. Now, they do appear to be sensible of pain and pleasure, and if so far sensible, they must of necessity have desire. But how can imagination be present in them? It may, perhaps, be answered that, as their movements are indeterminate, so those sensations are present, but present in some indeterminate manner.

The sentient imagination belongs, as has been said, to other animals, but that which is voluntary is found only in such as are rational; for it is matter of calculation whether this or that shall be done, and as the individual is to pursue what is larger and better, he must be guided by a rule of some kind, and thereby be enabled to individualize several different images. The reason why these creatures do not seem to be capable of forming opinions is, that they are without the faculty for drawing inferences, and this includes opinion. But the appetite has no deli-