CLASSIFICATION OF SCIENCES 123 



do with the development and evolution of human 

 life, or the arts and crafts. It is a matter for dis- 

 cussion whether there is only one science of Nature 

 or whether it is truer to say that there are several, 

 but all are agreed that the value and the progressive- 

 ness of the sciences depends in part on the degree 

 of their correlation. 



