(omissis)

While we note with satisfaction that in several institutes this doctrine has been taught for some time, We feel urged to exhort that such teaching be extended by regular systematic courses in Catholic schools of every kind, especially in seminaries. It is to be inserted into the religious instruction programs of parishes and of associations of the lay apostolate. It should be spread by every modern means of expression, daily newspapers and periodicals, publications of both a scientific and a popular nature, radio and television.

(omissis)