La distinzione fregeana tra Senso e Riferimento
Which are the features of the meaning of a singular term or a sentence? In what does consist properly the understanding of the sense or reference of a linguistic expression? In Sense and Meaning, Frege shows that the knowledge does not imply the knowledge of its reference. The reference is not, namely, an ingredient in meaning and is not part of what a speaker has to know when she understands an expression. The understanding of a certain expression, Frege suggests, does not merely consist in our associating a certain thing with it as its referent. We must have “some means” by which this association is effected. This “means” is precisely what the sense of an expression is.