218 THE STAR IN THE WEST or by reason . ... But what reason can induce us to believe the existence of bodies without the mind , from what we perceive ." 1 This point Crowley fully em phasizes in “ Time ” when he writes : “ a thing is only real to us so far as it is known by us ; even its Un knowability is a species of knowledge of it : and , by Savitri ! when I say real to us , I say real absolutely , since all things lie to me in the radius of my , sensorium . * To others ' is a vain phrase .". And as it has already been shown in the chain A, B, A, B, A, B, it matters not if the Materialist chooses to place his finger on A , or the Idealist on B; so in the above , Berkeley annihil ating the idea of a material substratum , at one and the same moment , unwittingly immolates his own cherished child on that same blade with which he has just sacrificed his foe . And , seeking to supplant the miserable huts of the materialist , Berkeley similarly builds his gorgeous palaces on reason , perceiving not that the foundations of both are the same , and that one like the other will crumble into dust before the blinding storm of dialectic dispute . Berkeley , in positing Esse = percipi , considered that he once and for all had overthrown scepticism , which he defined as — the disbelief of the senses . In “ The Principles of Human Knowledge ,” he states : “ Our knowledge of these ( ideas ) hath been very much ob scured and confounded , and we have been led into very dangerous errors , by supposing a twofold exist ence of the objects of sense — the one intelligible or in the mind , the other real and without the mind ; where 1 The Principles of Human Knowledge , p . 39 . 2 Time , vol . ii, p . 269 Ibid . p . 51 .