'SPIRITS are active, indivisible substances; IDEAS [objects]
are inert, fleeting, dependent things, which subsist not
by themselves, but are supported by, or exist in minds or
spiritual substances.... The cause of Ideas is an incorporeal
active SUBSTANCE or Spirit.'
--_Berkeley._
London
Swan Sonnenschein & Co.
Paternoster Square
1892
[All rights reserved]
'_Looking to the chaotic state of logic text-books at the
present time, one would be inclined to say that there does
not exist anywhere a recognised, currently-received body of
speculation to which the title Logic can be unambiguously
assigned, and that we must therefore resign the hope of
attaining by any empirical consideration of the received
doctrine, a precise determination of the nature and limits of
logical theory._'
_Encyc. Brit._, Art., LOGIC.