Quinto Martini paid particular attention to "Portraits" and to "the Rain" theme. The artist exercised portraiture since his first sculpture experiences, portraying relatives, friends, and peasants of his homeland. Many portraits were made in terracotta, plaster cast, bronze of his mother, Ardengo Soffici, his wife Maria Ferri, often shown at important exhibitions. "Portraits" of artists, scholars, intellectuals, were made by Quinto Martini from the end of the Second World War until his death, in a sort of continuous dialogue with them that lasted for decades and at times with repeated portraits across the years. In 1992, two years after the artist's death, 30 of these "Portraits" were exposed in an exhibition hosted at Palazzo Strozzi in Florence, to realize a project that the artist imagined in 1984. The disastrous inundation of Florence of 1966 intensified the inspiration of Quinto Martini for "the Rain" theme, expressed through drawings and bas-reliefs, but also through operas in bronze. The poets and intellectuals Mario Luzi, Renzo Federici, Tommaso Paloscia, Carlo Levi, many of whom were subjects of the "Portraits" themselves, wrote about these operas hosted again in Palazzo Strozzi in 1978.