First published in 2005. Routledge is an imprint of Taylor & Francis, an informa company.

This is the first complete theory of the morphology of language, a compendium of information on morphological categories and operations.

The author attempts to show how an adequate theory of belief sentences can be formulated within the church-frege framework. it is argued that ordinary substitution of identicals is adequate within belief contexts provided that certain criteria for identity of senses are not adopted. a criterion that avoids these difficulties is then put forward.