High Quality Content by WIKIPEDIA articles! Rudolph Lingens is a fictional character often used by contemporary analytic philosophers when they need a hypothetical scenario which illustrates some feature of the indexicality of natural language. He was created by the logician Gottlob Frege in the course of one of the earliest systematic discussions of indexicals. A number of philosophers picking up on Frege's discussion of indexicals, notably John Perry, David Lewis, and Robert Stalnaker, have adopted Lingens to make their own points about indexicals. Lingens first appears in Frege's influential essay 'Thought' ('Der Gedanke', published posthumously in Beiträge zur Philosophie des deutschen Idealismus I (1918 19), pp. 58 77). Mr. Lingens appears in the company of Leo Peter. Both are concerned with Dr. Gustav Lauban's having been wounded, and are later joined by Herbert Garner who is possessed of the knowledge that Gustav Lauben was born on 13 September 1875. Frege's discussion is concerned with how proper names and indexicals like 'I' function and how they are connected with the sense (or mode of presentation) that, on his account, each speaker who uses them associates with them.