In a message dated 4/6/2013 6:00:54 P.M. UTC-02, omarkusto@xxxxxxxxx writes: I am recently hearing things such as: "We have a right and an obligation to vote." Can something be both a right and an obligation ? It seems to me that the concept of "right" entails a notion of choice (you can choose to do it or not to do it) which the concept of obligation clearly does not. Any opinions on this ? Well, googlebooks.com only provides two hits (two of the three below are identical) for the phrase, "he has a right and an obligation", so perhaps we should isolate further cases. Besides the problem raised by O. K., there's also the equivalence: "I went to the zoo; there were animals and elephants". Since "x is an elephant" ENTAILS "x is an animal" (as "he has an obligation" entails "he has a right") the phrase does border on the otiose. Or not. McEvoy may object (or not) to the Gr*c*ian treatment of 'right/obligation' being puzzling from the point of view of observance of Gr*c*ian maxims. CHILD (to Father): Can I go to the bathroom? FATHER: You can, but you may not. Cfr. R. Paul: >ought implies can. For surely, if it must rain it does follow that it may rain. But it would be odd to utter, "it may rain" (which IMPLICATES, "but then again it may not") when the utterer is in a condition (rare) to know that it _MUST_ rain. Mutatis mutandis, "he has an obligation not to lie" seems like the correct thing to say, since "he MAY not lie" (i.e. he has a right not to lie) seems less informative (on the face of it). Or not. Note that 'right' has a further implicature that 'may' does not ("if he has a right to do A, then A is the right thing to do"). Or something. Gr*c* argued for the AEQUI-vocality of 'must' (in alethic and practical contexts), since he abhorred the view that there was a moral 'sense' of "must" vis-à-vis OTHER 'senses'. Similarly, for 'may'. But one point to argue would be that while "ought" implies "can" -- seems like an intelligent (if brusque) thing to say, "ought" implies "may" -- seems colourless and harmless -- or not. -- cfr. "MUST implies MAY". Cheers, Speranza American secondary education - Volumi 1-2 - Pagina 4 books.google.com/books?id=HxorAAAAMAAJ Ohio Association of Secondary School Administrators, Ohio Association of Secondary School Principals - 1970 - Visualizzazione snippet - Altre edizioni ... but is one who makes decisions after careful study and consultation with teachers, students and lay personnel. Since he has a broad education and has specialized in education, he has a right and an obligation to stand up for what is best for ... Departments of state, justice, and commerce and the United States ... - Pagina 1744 books.google.com/books?id=0n00AAAAIAAJ United States. Congress. Senate. Committee on Appropriations - 1954 - Visualizzazione snippet - Altre edizioni Under existing law, if the Postmaster General thinks the rat he pays are too high, he has a right and an obligation to file a petition with t! Civil Aeronautics Hoard requesting their reduction. Moreover, he may interrei in any pending proceeding. Departments of State, Justice: the judiciary, and related agencies ... - Parte 2 - Pagina 1744 books.google.com/books?id=CkEQAAAAIAAJ United States. Congress. Senate. Committee on Appropriations. [from old catalog] - 1954 - Visualizzazione snippet - Altre edizioni Under existing law, if the Postmaster General thinks the rates he pays are too high, he has a right and an obligation to file a petition with the Civil Aeronautics Board requesting their reduction. Moreover, he may intervene in any pending ... ------------------------------------------------------------------ To change your Lit-Ideas settings (subscribe/unsub, vacation on/off, digest on/off), visit www.andreas.com/faq-lit-ideas.html