232 SECTIONAL ADDRESSES. 
suspend his researches because his fundamental conceptions and assump- 
tions are disputable and disputed ; nor does he turn to some other branch 
of science in order to borrow from it others that have more prestige. Let 
us follow his example. 
Let us gather our facts of human nature by objective and by intro- 
spective observation. Let us make our empirical generalisations and 
correlations of these facts, building up our own science in our own way. 
Let us boldly affirm that, just as the physical sciences do not proceed 
deductively from any system of exact abstract propositions, so also 
psychology, the most concrete of the sciences, is not required by any 
higher authority to accept or formulate any abstract propositions as an 
unchanging deductive basis. 
It may be that eventually men of science will agree that there are in 
the universe two ultimately different kinds of process, the mechanistic 
and the purposive, the strictly determined and the creative, the physical 
and the mental. Or it may be that, eventually, one of these may be shown 
to be merely an appearance of the other, an appearance due to the present 
limitations and imperfections of our understanding. At present we 
cannot decide this issue. 
But, if I attempt to guess at the future development of Science, I 
incline to follow the lead of the most powerful intellects of all ages, and to 
predict that, if such resolution of the two types of process into one shall 
ever be achieved, the purposive type that we regard as the expression of 
Mind will be found to be more real than the other. 
