Within these twenty principles, based heavily on Bushido and Zen, lies the philosophy of Shotokan.The principles allude to notions of humility, respect, compassion, patience, and both an inward and outward calmness.and is widely credited with popularizing "karate do" through a series of public demonstrations, and by promoting the development of university karate clubs, including those at Keio, Waseda, Hitotsubashi (Shodai), Takushoku, Chuo, Gakushuin, and Hosei.Funakoshi had many students at the university clubs and outside dojos, who continued to teach karate after his death in 1957.Several Shotokan groups have introduced kata from other styles into their training.The original Shotokan kata syllabus is introduced in Funakoshi's book Karate-do Kyohan, which is the Master Text of Shotokan karate.
The formalities of kumite in Shotokan karate were first instituted by Masatoshi Nakayama wherein basic, intermediate, and advanced sparring techniques and rules were formalised.
It was Funakoshi's belief that through karate practice and observation of these 20 principles, the karateka would improve their person.
The Dojo kun lists five philosophical rules for training in the dojo; seek perfection of character, be faithful, endeavor to excel, respect others, refrain from violent behaviour. The Dojo kun is usually posted on a wall in the dojo, and some shotokan clubs recite the Dojo kun at the beginning and/or end of each class to provide motivation and a context for further training.
Initially strength and power are demonstrated instead of slower, more flowing motions.
Those who progress to brown and black belt level develop a much more fluid style that incorporates grappling, throwing and some standing joint locking jiu-jitsu-like techniques, which can be found even in basic kata.) which form the foundations of the art, before some of his students established the JKA.
When the JKA was formed, Nakayama laid down 27 kata as the kata syllabus for this organisation.