Читать книгу Selected Mathematical Works: Symbolic Logic + The Game of Logic + Feeding the Mind: by Charles Lutwidge Dodgson, alias Lewis Carroll - Lewis Carroll - Страница 25

“A lame puppy would not say “thank you” if you offered to lend it a skipping-rope.”

(1) The Subject is evidently “lame puppies,” and all the rest of the sentence must somehow be packed into the Predicate.

(2) The Verb is “would not say,” &c., for which we may substitute the phrase “are not grateful for.”

(3) The Predicate may be expressed as “ * not grateful for the loan of a skipping-rope.”

(4) Let Univ. be “puppies.”

(5) The Sign of Quantity is “all.”

(6) The Proposition now becomes

“All | lame puppies | are | puppies not grateful for the loan of a skipping-rope.”