Man's unique grandeur is ultimately based on his capacity to know the truth. And human beings desire to know the truth. Yet truth can only be attain in freedom. This is the case with all truth, as is clear from the history of science; but it is eminently the case those truths in which man as such, is at stake, the truths of the spirit, the truths about good and evil, about the great goals and horizons of life, about our relationship with God. these truths cannot be attained without profound consequences for the way we live our lives.
- POPE BENEDICT XVI (January 9, 2006)
So it happens that men is such matters easily persuade themselves that what they would not like to be true is false or at least doubtful.
- POPE PIUS XII Encyclical (Humani generis)
