"Now who is a genuine theologian? Is someone a theologian because he has read a lot of theological books and keeps abreast of the pertinent bibliography? But such a person resembles, to give an example, a microbiologist who has read a lot of books relating to his science, but has never used a microscope, has never performed laboratory analyses, and has never done other similar procedures. In all the exact sciences, the person whose opinion is respected and who is authoritative in his field is always that scientist who has experience with the object or phenomenon that he deals with and has studied. In other words, an authority has experience in observation and understands the phenomena that he observes .... Of course, some intellectuals practice theology using their minds merely because they have read some books on theology, even though that is strictly forbidden by the Fathers of the Church."
"No one can be forced to have faith. Like the other virtues, it must be freely embraced. If we teach those under our care to act piously as sons of the Church, we have reason to hope that God Himself will reward them, and us, with the gift of faith, in which lies our salvation."
"Later on, a number of people urged the king [Olaf] to force Kjartan and his men to accept the faith, and said they thought it unwise to have so many pagans near him. The king replied angrily, and said he thought there were plenty of Christians who did not conduct themselves so well as Kjartan and his men did: 'And for such men I am prepared to wait a long time.'"
"Christ is transfigured, not by putting on some quality He did not possess previously, nor by changing into something He never was before, but by revealing to His disciples what He truly was, in opening their eyes and in giving sight to those who were blind."