Be without fear in the face of your enemies. Be brave and upright that God may love thee. Speak the truth always, even if it leads to your death. Safeguard the helpless and do no wrong. That is your oath. 12世纪铁匠伊贝林的贝里昂保卫耶路撒冷城并对抗伊斯兰领袖萨拉丁的故事
To me, the "Silence" refers to the vast, encompassing environs - a thick wall surrounding the three, making no room for them to communicate. All three represent the self -- Anna the hedonistic, Esther the Catholic (the guilted, the conscientious), Johan the observant.