The logical picture of the facts is the thought.
3.1 (4) In the proposition the thought is expressed perceptibly through the senses.
3.3 (4) Only the proposition has sense; only in the context of a proposition has a name meaning.
3.4 (2) The proposition determines a place in logical space: the existence of this logical place is guaranteed by the existence of the constituent parts alone, by the existence of the significant proposition.
3.5 The applied, thought, propositional sign, is the thought.