Erasmus of Rotterdam (1469-1536; therefore, a very current author) wrote a In Praise of Stupidity which should be required reading in high schools: everything is relevant, educational and entertaining. (See the Catalan translation by Jaume Medina, Ed. 62 and others.) Among many things, Erasmus is the author of more than four thousand adages (Adagia, in Latin), written as Latin and Greek exercises, and conversation exercises, for schools. We would find many that could be disseminated today with the same didactic purpose as the 16th century because, as we have indicated, Erasmus is already an author of our time. There is more than one translation of the adages into Catalan, partial, which you will find in Libros del Índice and in Ediciones de la ele geminada. They are good. All knowledge is useful.