Full Idea
The meaning (reference) of 'evening star' is the same as that of 'morning star', but not the sense.
Gist of Idea
The meaning (reference) of 'evening star' is the same as that of 'morning star', but not the sense
Source
Gottlob Frege (On Sense and Reference [1892], p.27)
Book Reference
Frege,Gottlob: 'Translations from the Writings of Gottlob Frege', ed/tr. Geach,P/Black,M [Blackwell 1980], p.57
A Reaction
Max Black translates 'bedeutung' as 'meaning', but nowadays everyone calls it 'reference'. This is Frege's crucial distinction, which greatly clarified analytical philosophy. Nevertheless, is it a sharp distinction? E.g. referring to a fictional name?