"So it is an important task that Paolo Brogini and Mario Di Salvo have undertaken in bringing to light one of the oldest and most enduring genres of ceramics in Ecuador: the sello or seal. Interesting the hypothesis of the authors relating to the use of sellos: sellos as a form of communication and sellos as amulets or ritual objects . . . And it is clear from the illustrations and text of these authors that they have taken great joy and have learned a great deal by studying and using these seals.To underline the scientific importance of the numerous dates that were revealed as a result of thermoluminescence tests. It is their admiration and respect for the past and its beauty that they share with us in the pages that follow." Thomas B.F. Cummins