Containing all of the key writings leading up to the publication of his Philosophical Essays in 1777, this volume presents complete works by Johann Nicolaus Tetens (1736-1807) in English for the very first time. These important essays focus on method in metaphysics and mathematics, the analysis of language, and various anthropological questions that occupied thinkers of the period. Key features of the volume include: · Accurate, readable translations · Detailed scholarly notes · A substantial introduction situating Tetens's works in historical context · A German-English glossary This collection marks a significant contribution to scholarship on Kant and 18th-century German philosophy. Tetens has long been regarded as an important source for Kant, but his work is now being discussed in its own right. Putting Tetens's influential Philosophical Essays of 1777 in the context of his earlier and later works will enable scholars to achieve a much fuller picture of his-and his contemporaries-approaches to a variety of subjects. This collection is a welcome addition that will enrich the burgeoning field of 18th century philosophical studies.