Lecoq wrote on the art and philosophy of mimicry and miming. Therein he traces mime-like behavior to early childhood development stages, positing that mimicry is a vital behavioral process in which individuals come to know and grasp the world around them. Lecoq also wrote on the subject of gesture specifically and its philosophical relation to meaning, viewing the art of gesture as a linguistic system of sorts in and of itself. Lecoq classifies gestures into three major groups: gestures of action, expression, and demonstration.