At first russell thought (p) that whatever a proposition is about must be a constituent of it. Then, Around 1900, He discovered denoting concepts and realized that a proposition could be about something and have only its denoting concept as constituent. However, A number of remarks that he made through the years can only be understood as inspired by (p). In particular, The arguments offered in "on denoting" against the doctrine of denotation of "principles" are grounded on (p).