ABSTRACT
This chapter examines G. Frege’s theory of judgement, using his famous paper Uber Sinn und Bedeutung, published in 1892. The distinction between meaning and reference can best be explained in a series of examples beginning with Frege’s own first example, of the ‘evening star’ and the ‘morning star’. The true judgements are axioms — they are the foundation of axiomatic theory. The first part of Frege’s paper is thus a theory of expression and meaning, to use the language of Edmund Husseri’s First Logical Investigation. The demonstrative premise is true and necessary — a judgement with one reference, the True. This is formal logic — axiomatic theory, a theory of proof. Formal logic is concerned with principles of valid inference — a theory of validity. The problem of the form and content of judgements can be elucidated by Husseri’s theory of intentionality.
