"Trace it to the fountain-head, and you shall not find that you had it by any of your senses, the only true means of discovering what is real and substantial in nature: you will find it lying amongst other old lumber in some obscure corner of the imagination, the proper receptacle of visions, fancies, and prejudices of all kinds; and if you are more attached to this than the rest, it is only because it is the oldest."
— Berkeley, George (1685-1753)
Alciphron: or, the Minute Philosopher. In Seven Dialogues. Containing an Apology for the Christian Religion, Against Those Who Are Called Free-Thinkers. (Dublin: Printed for G. Risk, G. Ewing, and W. Smith, 1732). <Link to Vol. I in ECCO-TCP><Vol. II>
See also Alciphron: or the Minute Philosopher (London: J. Tonson, 1732). <Link to Google Books>