This publication retraces the stages of the career of Renato Mambor, one of the main figures in the visual arts renewal movement in Italy at the end of the 1950s. One of the most complex and versatile artists in the second half of the last century, his works belong to a border zone between visual and performing arts, open to a metalinguistic relationship between object, word, and the viewer. This book offers an extensive view of Mambor?s experimental work in general, beginning with his early work, his performance art and theatrical activities, as far as his return to painting in the 1990s. The book contains a rich collection of photos of his works and a wide selection of archive images and texts by the artist; it also presents a focus on the mixture of painting, theatre and photography, proposing an exploration of the relationship between object-work-view and the performances by the artist, also in the light of the recent neuroscientific theory of Embodiment. The book also includes an interview with Gianna Mazzini, director of the recent documentary 'Parola chiave Mambor'.