Kon'yaku o haki shite shimatta no wa sōkei datta.It was rash of me to break off the engagement.

sōtō no washithe double-headed eagle

Taichō ga inai shōtai nado tatakau ni atai shinai.A squad without a leader isn't worth fighting.

Gakkō de tomatta chishiki wa, jissai no shakai de wa yakudatanai, tatami no ue no suiren da, to iwaretari, ittari shita koto ga nai hito wa inai, to omoimasu.I think that everyone has heard or even said that the knowledge gained in school is unhelpful, practically useless in the real world.