Sorry basically means "sharing a feeling empathy for other's bad situation" though it means 2 different meanings depending on the origin of the issue. But sometimes I still confusing such as this situation. ========================================= Thor: Couldn't we find a way (for me) to come back? Loki: Mother forbidden your return. This is goodbye, brother. I'm so sorry. Thor: No, I AM SORRY. Thank you for coming here. ========================================= source: http://www.wattpad.com/18715443-loki-scenes-~thor~ In that case, how can I understand Loki's I'm so sorry. ? First, I thought, due to forbidding Thor from returning is by his mother, Loki's "I'm so sorry." is just conveying sympathy not resposibility. However, after Loki's saying Thor says "No. I AM sorry" which means THOR thought that Loki felt resposibility of his banishment and no returning. Which one is better understanding of the dialogue?