Using a title based on a “reversed” proverb, two recurring moments in marine painting —the tempest and the calm— are contrastedly displayed at a concave angle of the room, thus preventing the viewer from observing the whole from a single point of view. The theme of duplicity —complementary and opposite—, and the chronological time-weather relation1, are explored in these open-sea landscapes, as attention is drawn to a genre not often featured in Montevideo, especially considering that the collection of the Museo Nacional de Artes Visuales contains over a hundred works by prominent artists who were interested in the subject.