That is the title of this City Journal obituary of the North American philosopher and logician Saul A. Kripke, who died earlier this month at the age of 81 and whose most influential work were his 1970 lectures on “Naming and Necessity” (published in 1980 and available here). Among other things, I learned that the great Kripke (like H. L. A. Hart, another intellectual giant of the 20th century) never earned a doctorate.