CHAPTER II. 



THE SCIENTIFIC BASIS OF MENTAL AND MORAL 

 PROGRESS. 



It is not highly necessary after what has been 

 already said in these pages, to adduce much evidence 

 to show that scientific discoveries, either directly or 

 through the medium of the inventions based upon 

 them, have been a great cause of mental and moral 

 progress. As however there are many persons who 

 do not perceive the dependence of such progress, and 

 especially of moral advance, upon science, a few of 

 the chief relations of those subjects to each other may 

 be pointed out. 



The dependence of mental progress upon science^ 

 may be rendered manifest in several ways : ist. By 

 showing that new scientific knowledge is continually 

 extending and modifying our views of existing things. 

 2nd. That inventions based upon scientific discoveries 

 have aided and extended our mental powers : 3rd. 

 That mental phenomena may be made the subject of 

 experiment, observation, analysis, and inference : 



*NOTE. The whole of this chapter, especially the Moral Section, is capable of 

 great amplification and much more copious illustration. 



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