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production of the world’s harmony, but it opens before us a per- 
spective that embraces all things, a perspective embracing the infi- 
nite and the atom, with all the intervening grades of force and 
of life, the grand hierarchy of being, of causing, of becoming ; 
therefore, the advance from science to philosophy is but an ascent 
from one grade of abstraction to another, without jar or hindrance, 
for those whose minds are keen enough for analysis and broad enough 
for synthesis. 
Yet another motive which leads, or rather forces, the logical sci- 
entist into philosophy is the fact that problems exist and demand a 
solution which no amount of scientific research can solve. What is 
the origin of all? What is the aim of evolution? What is the 
nature of the human soul, its whence, its whither? What is the 
real value of human life? What are its duties, its rewards, its des- 
tiny? Any individual scientist may brush these questions aside, 
but there they stand, they confront mankind, they ever have con- 
fronted mankind, they ever have forced mankind to its highest 
and its deepest and its noblest thinking. ‘They demand a reply, 
they prove with the very evidence of intuition that a reply to these 
problems is of greater importance than a reply to any of the prob- 
lems ever started by physics or by chemistry ; and just in proportion 
as special research drifts away from facing these problems they cry 
out all the more loudly in the ear of humanity and tell man that he 
dare not ignore them. The man who stands ankle deep in the riv- 
ulet may laugh at the shallowness of the little stream, but his merri- 
ment does not fathom the sea into which that stream and a thousand 
others are pouring ; and to sound the depths of that all-comprising 
truth into which the separate branches of knowledge empty their 
threads of facts is the proper office of philosophy. 
What system of philosophy is going to do this? What system of 
philosophy can we Americans at the close of the nineteenth century 
accept? It must be a philosophy that shall have an eye on the past 
and an eye on the future ; that is to say, first, it must be a fair and 
balanced philosophy that shall avoid extremes, extremes which are 
fatal alike to empirical and to speculative thought. It must avoid 
one-sidedness, it must keep clear of materialism and of idealism, of 
skepticism and of dogmatism, of pantheism and of atheism; it 
must be balanced, it must be an all-around philosophy, it must be 
the wa media. Secondly, it must be adaptable, it must be firm 
enough to hold fast to every addition which science may make to 
