Cesare Cozzo A theory of meaning, I shall assume, is a theory of understanding.
Logic is a theory of correct reasoning.
I shall distinguish five reasons why a theory of meaning can be considered relevant to logic. A theory of meaning can explain why we accept some basic logical principles without an argument and why we treat them so as to show that an argument for those principles is neither necessary nor possible. A theory of meaning is necessary in order to explain what a logical inference is, because premises and conclusions of a logical inference are meaningful sentences and a theory of meaning explains what a meaningful sentence is. A theory of meaning can justify a set of logical principles by showing that those logical principles are valid.