A Doctor of Humane Letters (Latin: Litterarum humanae doctor; D.H.L.; or L.H.D.) is an honorary degree often conferred to those who have contributed to issues of peace and social justice. Latin was the language originally spoken in the region around Rome called Latium. ... An honorary degree (Latin: honoris causa ad gradum, not to be confused with an honors degree) is an academic degree awarded to an individual as a decoration, rather than as the result of matriculating and studying for several years. ... The symbol of the Campaign for Nuclear Disarmament, which has become a widely recognized peace symbol. ... This article or section does not adequately cite its references or sources. ...
In an academic setting, where the educational background of the individual is of course salient, doctor is the term of address and title used by holders of a doctoral degree unless the holder has been appointed a professor, since this title usually supersedes the title doctor.
In certain countries, for members of certain professions, the title of doctor may be used even when the academic qualification of doctorate is not held: for instance, in Italy, for holders of a Laureate.
In Roman Catholicism, a Doctor of the Church is an eminent theologian (e.g.