Maluenda and Encabo introduce the book with a brief text entitled 'Volver a Julio CANO Lasso' in which they explain the plot thread they have followed to assemble las pieces of Natures, t the title of this monograph on Julio CANO Lasso, a theme, a t term, a concept that is always present in the work and in the life of the architect and that organizes the book, ignoring the chronological order in chapters that strongly attract: From the organic to the rational, The action of time, Current tradition, Urban architecture, Drawings and cities.