How often I have found that we grow to maturity not by doing what we like, but by doing what we should. How true it is that not every should is a compulsion, and not every like is a high morality and true freedom. – Karl Rahner
The Christian of the future will be a mystic or he will not exist at all. – Karl Rahner
Every year we celebrate the holy season of Advent, O God. Every year we pray those beautiful prayers of longing and waiting, and sing those lovely songs of hope and promise. – Karl Rahner
A state that suppresses all freedom of speech, and which by imposing the most terrible punishments, treats each and every attempt at criticism, however morally justified, and every suggestion for improvement as plotting to high treason, is a state that breaks an unwritten law. – Kurt Huber