(Extract from ‘Miscellaneous Thoughts on Karate: Ho Goju Donto’, by Miyagi Chojun, in ‘The Essence of Naha-te’, translated and compiled by Joe Swift)
I think that the relationship between Heishu and Kaishu in Karate-do is the same as relationship between the block script and the cursive script in Chinese calligraphy. Heishu represents the block script, whereas Kaishu is the cursive style. The block script can be described as quiet and calm, while the cursive script is active and dynamic. Therefore, it is obvious which one represents the fundamental techniques of writing. It also clear that we should proceed from the fundamental in an incremental manner.