Explicitly in the verbal sentence, or implicitly in the understanding of the subject entertaining it, every expression of a proposi- tion includes de… - Alfred North Whitehead

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Explicitly in the verbal sentence, or implicitly in the
understanding of the subject entertaining it, every expression of a proposi-
tion includes demonstrative elements. In fact each word, and each sym-
bolic phrase, is such an element, exciting the conscious prehension of some
entity belonging to one of the categories of existence.