The spontaneous gesticulation that accompanies speech is an integral part of the linguistic system. Movements of the body are made in conjunction with speech to produce meanings and perform a num- ber of essential discourse functions. Gesture is ‘gestural action’ and gesture symbolism is dynamic, schematic and imagistic. Gestures don’t just ‘depict’ but actually ‘do things’: they shape ideas and fuel thought; they describe or report scenes; they give directions; they expose, report, and sum up argu- ments; they achieve textual cohesion and regulate communicative interaction. Gestures are a window into the mind. As gestures are made, visible kinetic form is given to invisible mental representations and hidden cognitive mechanisms. As hands move within the gesture space, objets of conception are created, and cognitive processing is ‘acted out,’ using symbolic acts of pointing and manipulation. Key cognitive abilities are revealed in the process: the ability to construe ideas and events as objects and substances (conceptual reification); the ability to form image-schematic representations of ‘things’ and movements, and to use these iconically or metaphoricially; the ability to make symbolic uses of space. Gestures are also found to play a central role in the expression of grammatical meanings and mecha- nisms. Thus grammar and gesture are clearly integrated in the expression of temporal dimensions, aspectual notions and modal stances. Gesture activity is also shown to be involved in the expression of concession and comparison. Finally, technical and methodological dimensions of gesture-analysis are discussed. The case is made for a new, creative approach to gesture watching – the ‘language and gesture workshops’ – where students may observe and physically explore co-speech gestures, develop their own choreographic variations, and work on sound, gesture and meaning correspondence.< Réduire