The relevance of emotion for language and linguistics is considered from three perspectives: (a) the conceptualization of emotions, (b) the expression of emotions and (c) the grounding of language. As to the conceptualization perspective, research on the emotional lexicon is discussed. Not only content words (N, V, A), but also prepositions are relevant (to long for, hate against). From the expression perspective, it is claimed that the expression of emotions takes place on all linguistic levels: phonological, morphological, lexical, syntactic, and on the level of figurative language use (metaphor and metonymy). ‘Grounding’ of language in emotion means that emotion is one of the preconditions for the functioning of language (emotion is part of the embodied grounding) and for its coming into existence, both ontogenetically and phylogenetically.