TWO THEORIES OF KNOWLEDGE 37 



The advent of man with his faculty of Discourse 

 may be regarded as marking another distinct stage 

 in the evolutionary movement a stage, moreover, 

 the operations of which throw light upon the whole 

 nature of cerebral representations. The faculty 

 of rational Discourse, as Max Miiller pointed out, 

 is denominated in Greek by the word Xoyog, applic- 

 able at once to the mental activity and to its ap- 

 propriate expression in speech. Discourse is an 

 instrument by means of which man has been 

 enabled to construct his whole system of represen- 

 tations of the world in which he lives, the system 

 of what is commonly called his Knowledge. 

 Human Knowledge just is the body of man's 

 \ representations of his Experience in the world of 

 which he forms a part. It is not necessary to 

 insist here on the gradual but remarkable growth 

 and extension which Human Knowledge has under- 

 gone during the last two thousand years. Con- 

 currently with its extension man's ability to control 

 the forces of Nature has been enlarged and increased. 

 At the same time, however, that extension has 

 rendered possible false developments and aberra- 

 tions to which the more limited representations of 

 the brute are less liable. 



With the faculty of rational Discourse constantly 

 striving to extend the bounds of Knowledge, man 



