Fr. Carlos Luis Suarez Codorniú expresses his feelings of thanksgiving and his emotions after the mass celebrated in the Basilica of St. John Lateran, where 150 years ago Fr. Dehon was ordained. Fr. Carlos Luis is the 11th successor of the founder. Fr. Juanjo Arnaiz, on the other hand, illustrates the reasons for the choice of this specific Basilica for the celebration of the Mass of Thanksgiving.