[SL1]Solutions for § 1.
1. The Univ. is “persons.” The Individual “I” may be regarded as a Class, of persons, whose peculiar Attribute is “represented by the Name ‘I’”, and may be called the Class of “I’s”. It is evident that this Class cannot possibly contain more than one Member: hence the Sign of Quantity is “all”. The verb “have been” may be replaced by the phrase “are persons who have been”. The Proposition may be written thus:—
| “All” | Sign of Quantity. | |
| “I’s” | Subject. | |
| “are” | Copula. | |
| “persons who have been out for a walk” | Predicate. |
or, more briefly,
“All | I’s | are | persons who have been out for a walk”.
2. The Univ. and the Subject are the same as in Ex. 1. The Proposition may be written
“All | I’s | are | persons who feel better”.
3. Univ. is “persons”. The Subject is evidently the Class of persons from which John is excluded; i.e. it is the Class containing all persons who are not “John”.
The Sign of Quantity is “no”.
The verb “has read” may be replaced by the phrase “are persons who have read”.