In 1932 Sansoni was bought by Giovanni Gentile who extended its scope into philosophy and history.

[1] He started some new magazines including the second series of "Giornale critico della filosofia italiana", "Critica d'arte" (directed by Ranuccio Bianchi Bandinelli, Carlo Ludovico Ragghianti and Roberto Longhi), "Lingua nostra" (directed by Bruno Migliorini e Giacomo Devoto).

After the end of World War II and the assassination of Gentile in 1944, the publisher was managed by his son Federico.

In 1976 Federico Gentile sold the company to Rizzoli and on the same year he founded the publishing house Le Lettere (still located in Florence).

[3] Le Lettere acquired part of the titles of Sansoni, including Giovanni Gentile's Opera Omnia.