Editing Proper name (philosophy) (section)

===Sense-based theory of names===
[[Gotlob Frege]] argued that one had to distinguish between the [[Sense and reference|sense]] (''Sinn'') and the reference of the name, and that different names for the same entity might identify the same referent without being formally synonymous. For example, although the morning star and the evening star are the same astronomical object, the proposition "the morning star is the evening star" is not a [[tautology (grammar)|tautology]], but provides actual information to someone who did not know this. Hence, to Frege, the two names for the object must have a different sense.<ref>Frege, Gottlob. On Sense and Reference. In P. Geach, M. Black, eds. ''Translations from the Philosophical Writings of Gottlob Frege.'' Oxford: Blackwell. 1952.</ref> Philosophers such as [[John McDowell]] have elaborated on Frege's theory of proper names.<ref>McDowell,J. 1977: 'On the sense and reference of a proper name'. Mind, 86, 159-85.</ref>