128 ANIMAL-SENTIENT FORCES. [i. 



are the nerves acted on in the brain, and corresponding vital 

 movements excited thereby in the vital organs ; in the former 

 case in accordance with their natural functions ; in the latter, 

 in opposition thereto (252), but always in another way than 

 when the conception is neutral. 



Actions of the Sensational Desires and Aversions in the 

 Mechanical Machines through the Nerves. 



255. The direct sentient actions of the sensational desires 

 and aversions, are produced according to the laws already laid 

 down (80 — 88). They are made up by the sentient actions: 

 — 1, of the sensational foreseeings of a coming sensation, or 

 its opposite, expected by the mind (239 — 247); 2, by those of 

 this expectation (249); 3, by those of the impressions of sen- 

 sational pleasure and pain (84 — 87, 250). 



256. The same doctrines apply equally to the sensational 

 instincts and passions, since these are only desires and aversions 

 of a greater intensity, arising out of obscure or simple sensa- 

 tional stimuli (90, 91). 



257. In each sensational instinct and emotion, there is a 

 sensational foreseeing of coming sensations, the sentient actions 

 of which are none other than those of the imperfect material 

 sensation which is foreseen ; when it is external, the actions are 

 developed in those mechanical machines external to the brain, 

 which the foreseen external sensation sets in motion, &c. 

 (240, i, ii.) 



258. There are strong sensational stimuli conjoined in every 

 sensational instinct and emotion, the actions of which are the 

 same as those arising from the impressions of sensational 

 pleasure or pain, which impressions depend on the foreseen 

 material sensation. These stimuli change the vital actions in 

 a remarkable manner, and excite the animal-sentient force of 

 the brain to render perfect the imperfect actions of the coming 

 sensation. In all these cases, if the objects of the instinct or 

 emotion be true external sensations, the efforts of the soul 

 cannot attain them, and consequently the instincts or emotion 

 cannot be satisfied without the appropriate external impressions 

 (81,256); and in the sensational instincts and emotions, there- 

 fore, only those sentient actions of the future sensation can be 



