other, like a craftsman, moving sense-perception in the direction of the external object, to produce an impulse towards it. [30] For the living creature excels the non-living in two respects, in the power of receiving impressions and in the active impulsea towards the object producing them. The impression is produced by the drawing nigh of the external object, as it stamps the mind through sense-perception; while the active impulse, close of kin to the power aforesaid, comes about by way of the