 Initially, Kanō borrowed ideas from everywhere. As he wrote in 1898, "By taking together all the good points I had learned of the various schools and adding thereto my own inventions and discoveries, I devised a new system for physical culture and moral training as well as for winning contests." However, after judo was introduced into the Japanese public schools, a process that took place between 1906 and 1917, there was increasing standardization of kata and tournament technique.
