he participated in the second vatican council. cardinal basil hume (in a 13 november 1982 speech to the jocists) later noted that the council was cardijn's "monument" due to the great and lingering contributions he made to it. cardijn succeeded in ensuring that "apostolicam actuositatem" was named as the "decree on the lay apostolate" rather than the "decree on the laity" for he felt the latter title did not address the faithful to an adequate degree. pope john xxiii had named cardijin as a member of the preparatory commission on lay apostolate and had written "mater et magistra" in 1961 based on cardijn's model for social teaching as well as on his recommendation to commemorate seven decades since "rerum novarum" of pope leo xiii. he drafted more than 25 formal detailed notes for the commission advocating his vision for the faithful and these ideas later became incorporated into both "apostolicam actuositatem" and "lumen gentium". he gave three interventions in the council. one such intervention was made on religious liberties on 20 september 1965.