326 LAMARCK, HIS LIFE AND WORK 
all living beings and not even to all animals, is a very 
obscure feeling, with which are endowed those ani- 
mals provided with a nervous system sufficiently de- 
veloped to give them the faculty of feeling. 
“ This sentiment, very obscure as it is, is neverthe- 
less very powerful, for it is the source of inner emo- 
tions which test (cprouvent) the individuals possessing 
it; and, as the result, this singular force urees 
these individuals to themselves produce the move- 
ments and the actions which their wants require. 
Moreover this feeling, considered as a very active 
motor, only acts thus by sending to the muscles 
which necessarily cause these movements and actions 
the nervous fluid which excites them. 
“Indeed, as the result of organic or vital move- 
ments which are produced in every animal, that 
which possesses a nervous system sufficiently de- 
veloped has physical sensibility and continually 
receives in every inner and sensitive part impressions 
which continually affect it, and which it feels in 
general without being able to distinguish any single 
one. 
“The sentiment of existence [consciousness] 
general, since almost every sensitive part of the body 
shares in it. ‘It constitutes this me (#07) with which 
all animals, which are only sensitive, are penetrated, 
without perceiving it, but which those possessing a 
brain are able to notice, having the power of thought 
and of giving attention to it. Finally, it is in all the 
source of a power which is aroused by wants, which 
acts effectively only by emotion, and through which 
the movements and actions derive the force which 
produces thenn. =. 
“Finally, the inner feeling only manifests its 
power, and causes movements, when there exists a 
system for muscular movement, which is always de- 
pendent on the nervous system, and cannot take 
place without it.” 
