Although major cognitively based studies of SPACE and TIME in language have appeared in terms of "e;Frames of Reference"e;, these do not extend to a wide selection of the world's languages, nor do they combine SPACE and TIME in the overarching concept of WORLD, which has its own corresponding frames of reference. The aim of relating and unifying these concepts and their expression across languages constitutes the unique thrust of the present book, which will represent a significant extension of earlier approaches. Among its main conclusions will be that the complete separation of terms for SPACE and TIME is a relatively recent cultural phenomenon, rather than just a metaphorical extension of the latter from the former. The book will be of interest to all students and practitioners of Linguistics, in particular Cognitive Linguistics and Linguistic typology, but also to a more general readership interested in the historical evolution of concepts of SPACE and TIME.