Mater_si,_magistra_no
Mater si, magistra no
Slogan regarding Catholic social teaching
Mater si, magistra no (literally "Mother yes, teacher no") is a macaronic phrase that means Catholics need not follow all the teachings of the Catholic Church, particularly in regard to economic justice or the rights of workers. It was originally in direct response to the papal encyclical Mater et Magistra of 1961, as a reference to the then-current anti-Castro slogan, "Cuba sí, Castro no."[1]