There is a Supreme Reality which is Eternal and Indefinable.It is an Absolute,inconceivable and ineffable--the brahman.Unknowable in it's utterness,this Reality presents itself to us in three supreme terms of it's Truth,an absolute Existence,sat;an absolute Consciousness,cit;and an absolute Bliss,Ananda.This is the poise of Brahman turned towards self-revelation. This is the theme of the present Book by Sir John Woodroffe.This Book belongs to the seires on the Doctrine of Consciousness-Power has a special importance for the student exploring the subject.