His friend, Goro Shimura, who worked on the mathematics with him, many decades later, reflected on Taniyama's life. He said, "He was not a very careful person as a mathematician.
Su amigo Goro Shimura, que había trabajado las matemáticas con él, muchas décadas después, reflexionando sobre la vida de Taniyama, dijo: "No era muy cuidadoso como matemático.