"Work as such doesn't concern me.What intrigues me, what excites me, vexes me is the power of doing works. Thats why nothing looked to me more coarse and negligible than the poet reduced to being a poet." Paul Valery's note, evidently directed agains Mallarme, gives track for this volume, which is devoted to docus the idea of "poeisis like" building that is subject to precise conditions, like putting into practice resources of a particular kind, like playing with transparent images. Within such a horizon, artistic doing appears to be the palce where the mind develops it's own powers and states its knowing strategies. Thus operating, it defines again,"ab imis", the notion of art in the variety of it's patterns, it's forms and it's figures.