W e can trace the development of a nervous system^ and 
correlate with it the parallel phenomena of sensation and 
thought. We see, with nndoubting certainty, that they go 
hand in hand. But we try to soar in a vacuum the moment 
we seek to comprehend the connexion between them. An 
Archimedean fulcrum is here required, which the human mind 
cannot command.’’^ A few lines later he says: — ^‘'Man the 
object is separated by an impassable gulf from man the subject. 
There is no motor energy in intellect to carry it without logical 
rupture from the one to the other."’^* 
In his address to the Physical and Mathematical Section of 
the British Association, 1868, he says : — 
The passage from the physics of the brain to the corre- 
sponding facts of consciousness is unthinkable.’’^ 
Similar passages occur in the address given by the Professor 
to the Midland Institute, Birmingham, which it can hardly be 
necessary to quote. 
Professor Huxley has stated the same thing in other words. 
Thus, in Lay Sermons he says : — 
The man of science, who, forgetting the limits of philo- 
sophical inquiry, slides from these formuljB and symbols into 
what is commonly understood by Materialism, seems to me to 
place himself on a level with the mathematician who should 
mistake the a^’s and y^s with which he works his problems for 
real entities, and with this further disadvantage as compared 
with the mathematician, that the blunders of the latter are of 
no practical consequence, while the errors of systematic 
materialism may paralyse the energies and destroy the beauty 
of a life.’’^t 
It seems to me that our first point is now clearly established. 
The existence and the imrqateriality of Mind has been proved 
to be a cardinal and structural doctrine of Mr. Spencer’s 
system. Professors Tyndall and Huxley have been shown to 
concur. The entire school of thought represented by these 
men may therefore be justly held as allowing that the existence 
of Mind, which can be accounted for by no physical facts, is 
one of the things which cannot be dislodged from any coui- 
plete conception of the universe. 
II. We have now to establish a complete contradiction to 
what has been already proved, by demonstrating that vast 
tracts of Mr. Spencer’s Synthetic system ignore altogether the 
existence of Mind, and regard Man as nothing more than a 
composition of solar force. • 
* Address, Sixth Thousand, p. 59. 
t Lay Sermons. 
