The propositions of logic therefore say nothing. (They are the analytical propositions.)
6.111 Theories which make a proposition of logic appear substantial are always false.
Once could e.g. believe that the words "true" and "false" signify two properties among other properties,
and then it would appear as a remarkable fact that every proposition possesses one of these properties.
This now by no means appears self-evident, no more so than the proposition "All roses are either yellow or red" would seem even if it were true.
Indeed our proposition now gets quite the character of a proposition of natural science
and this is a certain symptom of its being falsely understood.
6.112
The correct explanation of logical propositions must give them a peculiar position among all propositions.
6.113
It is the characteristic mark of logical propositions that one can perceive in the symbol alone that they are true;
and this fact contains in itself the whole philosophy of logic.
And so also it is one of the most important facts that the truth or falsehood of non-logical propositions
can not be recognized from the propositions alone.