 The expression of the proposition alone is accidental and thus contains only a relative sense. Further, the linear order of the expression does not provide the listener with enough information about the logical form. Knowledge of the logical form requires reference to the mental proposition. This implies that every mental proposition, for both speaker and listener, is an interpretation. The meaning of any statement is a function of the understanding. This presentation of the speech act prepared the ground for Bacon’s mature theory in his post-1260 works, the De signis (DS), Compendium studii philosophiae (CSP), and Compendium studii theologiae (CST).