Word

いろは歌留多

伊呂波ガルタ、伊呂波歌留多、以呂波歌留多
いろはガルタ
playing cards bearing proverbs in the traditional ordering of the Japanese syllabary
Word

自今以後

じこんいご
henceforth; henceforward; hereafter
Word

他山の石以て玉を攻むべし

exp
たざんのいしもってたまをおさむべし
one should learn from other's mistakes; stones from other mountains can be used to polish one's own gems