When he showed his calligraphy to Noboru WATANABE, the then governor of Osaka Prefecture, Watanabe praised Soeda for his talent and tossed away Soeda's ink stone and seal to the yard, and additionally, he told Soeda to devote his mind to study rather than calligraphy in order to achieve great things.
時の大阪府知事渡辺昇に書いた書を見せたところ、渡辺はそのあまりの才能を惜しみ添田の硯と落款を庭に投げ捨て、書などではなく学業に専心し大成せよと諭した。