The categories directly point out that anything may be regarded, first, in the aspect of a simple Quale; secondly, as in Relation to other things; and thirdly, as a Sign, that is as referring to an object in virtue of determining an interpreting sign, which [I] call its interpretant[,] to refer to the object in the same way.
From an earlier/discarded draft
http://www.commens.org/dictionary/entry/quote-minute-logic-chapter-i-intended-characters-treatise-27