Excerpt from Outlines of Logic: An English Translation of Trendelenburg"s Elementa
4. A declaratory sentence is (1) affirmative, (2) negative. Affirmation is declaration of a relation between this and that; Negation is a declaration of non-relation. The statements are true according as they agree with the facts of the case.
5. The phrase Not-man is not a name; nor is there any existing name by which we can call it, for it is neither a sentence nor a negation. Let it pass as an Indefinite name, for it can be ranked equally well under either Being or Not-being. Every affirmation or negation will be made up of a name and a verb, or of an indefinite name and a verb: for without a verb there can be neither affirmation nor negation.
6. Of terms, some are General, others Singular. By the former I mean such as can be predicated of many subjects; by the latter, such as cannot; e.g., we place man among general terms, Kallias among singular.
A Proposition is a sentence affirming or denying one thing of another. It may be either Universal, Particular, or Indefinite. By Universal, I mean a proposition which asserts something of all or none of its subject; by Particular, one which asserts or denies something of some or not all of the subject; by Indefinite, one which makes an assertion without specifying whether it is universal or particular, as were one to say that the same science deals with opposites, or that pleasure is not a good.
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