The mastery of languages or, The art of speaking foreign tongues idiomatically This book, "The mastery of languages. Or, The art of speaking foreign tongues idiomatically", by Thomas Prendergast, is a replication of a book originally published before 1864. It has been restored by human beings, page by page, so that you may enjoy it in a form as close to the original as possible. This book was created using print-on-demand technology. Thank you for supporting classic literature.