This entry covers all of Ramsey’s contributions except to the discipline of economics, which is covered in the separate entry   Ramsey and Intergenerational Welfare Economics.  Note that all citations beginning solely with a date refer to works by Ramsey; these are listed by date in a subsection of the Bibliography. Also, collections of Ramsey’s works are cited by two-letter abbreviations, the keys to which are given in the first subsection of the Bibliography.