[3] Prince Shōtoku was known for his profound Buddhist faith when Buddhism was not widespread in Japan during the 6th century.

[4] The commission of Shitennō-ji was part of a massive national project led by Prince Shōtoku.

[citation needed] Kongō Gumi was the world's oldest company until it was acquired by the Takamatsu Construction Group in 2004.

The temple Prince Shōtoku built to honor them had four institutions, each to help the Japanese attain a higher level of civilization.

These are similar to the carving at the Sakafuneishi ruins which are believed to be a ritual site for Empress Kōgyoku (594–661) in Asuka, Nara Prefecture.