HUMAN PERSONALITY. 



ITS COMPOSITE AND DISSOLUBLE NATURE. 



T)IOLOGICAL science places the long-debated problem 

 -^-^ of human personality under new lights. We are 

 now able to demonstrate how one particular group of cells 

 in the human organism — cells such as were originally, in 

 the earlier ages of the earth, separate unicells — combined, 

 became modified and finally united to form one larger, 

 organized life, in conformity with the law of vital prog- 

 ress, through organization, pointed out in the first paper 

 of this volume. The human brain, indeed, is the grandest 

 terrestrial instance of this symbiotic progress. 



It will not be necessary here to enter upon an exposi- 

 tion of the " cell doctrine," or point out that the human 

 body is an organized union of physiological cells, nor 

 iterate the evidences of the evolution of life. It may be 

 taken for granted that readers are familiar with these 

 facts and accept them each in his own way. 



We begin, therefore, with the general statement, that 

 the human organism as we inherit it from our ancestors, 

 is an association of cell life, each cell a small organism by 



