Note 223 — Chapter VIII
Reading edition
“By the universe (of a proposition) is meant the collection of all objects which are contemplated as objects about which assertion or denial may take place. Let every name which belongs to the whole universe be excluded as needless: this must be particularly remembered. Let every object which has not the name X (of which there are always some) be conceived as therefore marked with the name x meaning not-X” (Syllabus, pp. 12, 13). Compare, also, De Morgan’s Formal Logic, p. 55.