622 PSYCHOLOGY 



task of genetic science to establish. It is no longer possible to rest 

 content with a science of body in one text-book and a science of 

 mind in another text-book, each of which claims that no single 

 text-book can be written from a point of view which explains the 

 origin of the dualism of the two, and sets forth the goal at which 

 the dualism is finally explained. Apart from private speculation, 

 it is psychology alone which can solve this problem; since it is 

 psychology alone in which the very movement itself by which the 

 sciences are differentiated writes itself down as a form of reflec- 

 tion. The origin, the motives, the object, the goal of thought it- 

 self are just the content of psychology; psychology must become, 

 therefore, more and more the interpretation and reinterpretation 

 of the genetic movement of the entire thought-content. 



(4) Involved in the two lines of progress just indicated, the 

 social and the genetic, and also confirming our expectation re- 

 garding them, there will be a racial and comparative psychology. 

 In racial evolution the human genetic series is objectively worked 

 out; and in the animal world, treated by comparative psycho- 

 logy, the corresponding pre-human series is displayed. Here psych- 

 ology will come into vital contact with ethnology, on the one 

 hand, and with animal biology, on the other hand. 



Thus described, the work of the nineteenth century in psych- 

 ology has been indeed most important. It has established the 

 science; it has set the direction of its future movement. It re- 

 mains for the twentieth century to reach practical applications 

 of its results, and to improve the methods and instruments of fur- 

 ther discovery. The present outlook is that social psychology will 

 be carried on in France and America, genetic psychology in Eng- 

 land and America, experimental psychology in Germany and 

 America. 1 And such an expression is only what may be put more 

 explicitly in the form of the opinion that in no country is the 

 outlook so bright for the science in all its branches as in the land 

 of the Louisiana Purchase Exposition, of which this Congress of Arts 

 and Science is the most interesting and perhaps the most remark- 

 able part. 



1 In Italy the principal currents set toward pathological and physiological 

 psychology. 



