As if to capture the intangible, the Collection de Nuages by Leandro Erlich proposes three clouds in grand windows as if coming from a cabinet of curiosity. Fragile shapes, but recognizable images, the artist seems to defy the laws of physics. The three windows, arranged in the magnificent space of the Sala delle Colonne of the Oratory of San Filippo Neri, invite us to a dreamlike journey, a walk through whims of changing yet still shapes. Faced with this delicate suspended beauty, Leandro Erlich places us in front of the poetry of a distant phenomenon, almost allowing us to touch the clouds thanks to the windows that seem to start an infinite catalog of recognizable forms. The materialization of non-matter, elusive and ambiguous, becomes ordered material.Once outside, it is natural to look up to the sky which, according to the artist, with its lights, shapes and colors conditions the perception that each of us has of our own city.