Otho is a dwarf with a distaste for human, who is obnoxious to all. He has a patient, Verlat, that he is unable to treat due to losing his connection to the Source. The only means by which it would be possible to heal his patient would be at the cost of Goemoe's by using the last healing gem from Goemoe's healing shrine. He is unable to take this route as Goemoe also has a patient that requires healing via the Source, which places them in conflict with their oath "Not to kill, even by inaction."
If pressed for the location of the location of the shrine he refuses, stating that "its the only way to ensure you do no harm."