5.47

It is clear that everything which can be said beforehand about the form of all propositions at all can be said on one occasion. For all logical operations are already contained in the elementary proposition. For “fa” says the same as

Where there is composition, there is argument and function, and where these are, all logical constants already are. One could say: the one logical constant is that which all propositions, according to their nature, have in common with one another. That however is the general form of proposition.