EVOLUTION THE MASTER-KEY 



lus claimed the greatest Jew of our era, it left him 

 time enough to formulate the same idea. Spencer 

 has merely proved that which Spinoza had seen 

 and asserted two centuries earlier that mind and 

 matter are but the correlative manifestations of 

 one underlying reality, of which mental and ma 

 terial phenomena are the revelations. The work 

 of Spencer in the realm of ontology was the in 

 dependent conception and establishment upon the 

 evolutionary psychology of this thought of the 

 God-intoxicated Spinoza, which Goethe might well 

 declare to be the grandest, profoundest, and truest 

 of all ages. 



