4 As the Catholic Church declares in the strongest terms the simplicity, spirituality, and immortality of the soul, so with unequalled constancy and publicity she ever also asserts its freedom. These truths she has always taught, and has sustained them as a dogma of faith, and whensoever heretics or innovators have attacked the liberty of man, the Church has defended it and protected this noble possession from destruction. History bears witness to the energy with which she met the fury of the Manichaeans and others like them; and the earnestness with which in later years she defended human liberty at the Council of Trent, and against the followers of Jansenius, is known to all. At no time, and in no place, has she held truce with fatalism .
Source: Libertas (Vatican.va)