If words have all their possible extent of power, three effects arise
in the mind of the hearer. The first is, the SOUND; the second, the
PICTURE, or representation of the thing signified by the sound; the
third is, the AFFECTION of the soul produced by one or by both of the
foregoing. COMPOUNDED ABSTRACT words, of which we have been speaking
(honour, justice, liberty, and the like), produce the first and the
last of these effects, but not the second. SIMPLE ABSTRACTS, are used to
signify some one simple idea without much adverting to others which may
chance to attend it, as blue, green, hot, cold, and the like; these
are capable of effecting all three of the purposes of words; as the
AGGREGATE words, man, castle, horse, etc. are in a yet higher degree.
But I am of opinion, that the most general effect, even of these words,
does not arise from their forming pictures of the several things
they would represent in the imagination; because, on a very diligent
examination of my own mind, and getting others to consider theirs, I do
not find that once in twenty times any such picture is formed, and, when
it is, there is most commonly a particular effort of the imagination
for that purpose. But the aggregate words operate, as I said of the
compound-abstracts, not by presenting any image to the mind, but by
having from use the same effect on being mentioned, that their original
has when it is seen.