This book discusses three linguistic projects carried out in the seventeenth century: the artificial languages created by Dalgamo and Wilkins, and Leibniz's uncompleted scheme. It treats each of the projects as self contained undertakings, which deserve to be studied and judged in their own right. For this reason, the two artificial languages, as well as Leib niz's work in this area, are described in considerable detail. At the same time, the characteristics of these schemes are linked with their intellectual context, and their multiple interrelations are examined at some length. In this way,...