Gotlob Frege on Sense

To explain the relation between language and external reality, the founder of symbolic logic and father of the contemporary philosophy, Gotlob Frege believes that, in addition to the mental meaning and external reference of the word, there is a third thing corresponding to the word which shows how the word relates to the external reference, and he calls it sense. Unlike meaning which is a mental and personal thing, sense is an external and objective reality of which all people may enjoy; and in this way a knowledge shared by all human beings may be acquired. Frege's view may be studied from various perspectives. In addition to incoherencies in Frege's arguments to the effect that sense is both objective and subjective, his argument is unable to prove objectivity of sense; and even the claim that sense is external is itself false. Even if we accept his claim, he has not managed to eliminate the problem of psychologism in the path of human knowledge, which he seeks to solve.