Kozan Yoshitada MORIKAWA (his pseudonym is Kantokuken), the founder of Yamato school, stated in 'Yamato-ryu Kyudo Kyokun no maki' (Precepts for Kyudo of Yamato school) as follows:
大和流開祖森川香山喜忠（号観徳軒）は「大和流弓道教訓之巻」で以下のように述べている。