The force of these impressions (and it would not be difficult to find stronger statements in the history of scientific and ethical nominalism) diminishes if one tries to determine in what consists that objectivity which they uncritically assume as given in sense-perception. For one must recognize that not all our possible modes of sense-experience are equally concerned in the presentation of this perceived objective world. Certain sensory "quales" are immediately referred to outward objects as belonging to them. Certain others are, in a way, "inward," either not more definitely localized at all or merely localized in the sense-organ which mediates them. Now, the reason for this difference cannot lie in the content of the various sense-qualities abstractly taken. A visual sensation, apart from the setting in which it occurs in common experience, can be no more objective in its reference--indeed, can have no more reference of any kind--than the least definite and instructive organic sensation. For the degree of distinctness with which one discriminates sense-qualities depends upon the number and importance of the interpretative associations which it is important from time to time to "connect" with them; or, conversely, the sense-qualities are not _self_-discriminating in virtue of an intrinsic objective reference or meaning which each possesses and which drives it apart from all the rest. Indeed, an intrinsic meaning, if a sensation could possess one, would not only be superfluous in the development of knowledge, but, as likely to be mistaken for the acquired or functional meaning, even seriously confusing.[116]