Note 260 — Chapter VIII
Reading edition
It will be observed further that upon the same assumption we cannot even affirm the formal validity of the proposition All X is X. For X might be non-existent, and the proposition would then be false.
Reading edition
It will be observed further that upon the same assumption we cannot even affirm the formal validity of the proposition All X is X. For X might be non-existent, and the proposition would then be false.