xlvi PREFACE TO THE SECOND EDITION 



line,^ all but the first and second are simply the eluci- 

 dating consequences, or corollaries, of those two ; if 

 those are established, then all the others follow. 

 What the advocate of Personal Idealism has to prove, 

 then, is the pair of complementary principles con- 

 tained in Proposition I, and the principle contained in 

 Proposition II as to the nature of Space and Time 

 and of the relation, transcending both, between minds 

 themselves. The achievement of this task depends 

 on attaining to the true distinction, the real relation, 

 between the two orders of existence which to ordi- 

 nary and uncritical reflexion — usual common-sense 

 — appear as two sjibstaiices, so called, or species of 

 substance, and are named "mind" and "matter." 

 What is to be shown is, that this common-sense con- 

 trast, read off as a hard-and-fast dualism, is not intel- 

 ligibly interpretable except as the distinction between 

 two aspects of one and the same total nature in the 

 beings that possess it — the distinction, namely, be- 

 tween the whole and its dependent part ; between the 

 primitive, or unconditioned, or, more accurately, the 

 self-defining, and the derivative, or conditioned, which 

 is defined and determined by the first; or, again, if 

 one chooses to say so, between the originating and 

 the originated, the immutably causative and the 

 causedly mutable ; that is to say, finally, between 

 (i) minds, actively thinking constitutors of experience 



^ See pp. xii-xviii, al)ove. 



