"Your heart is broken, when you should be convinced." follows. It means that to be convinced is stronger than to be prepared. Indeed judgement or decision is different from understanding or acceptance in level. That's why people say, "I know what you say but I don't accept it." or on the contrary "I don't know but I can understand." From the conversation of former Rhozanpaku Group's leaders in a long novel "Youreiden."
January 11 2017
from “Oriori no Kotoba” by Kiyokazu Washida, The Asahi Shimbun