“There is an ancient Chinese maxim which says, ‘On ko chi shin.’ This means, ‘To study the old is to understand the new.’ In short, the ‘Bubishi’ is the bible of Karate tradition – irrespective of modern interpretations – as all ‘styles’ rest upon identical principles influenced only by various interpretations of common knowledge.” ??
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Patrick McCarthy 9th dan Koryu Uchinadi
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“There are no styles of karate-do, just varying interpretations of its principles.”
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Kenwa Mabuni (1889-1952)
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“There is no place in contemporary Karate-do for different schools. Some instructors, I know, claim to have invented new and unusual kata, and so they arrogate to themselves the right to be called founders of ‘schools’. Indeed, I have heard myself and my colleagues referred to as the Shoto-kan school, but I strongly object to this attempt at classification. My belief is that all these ‘schools’ should be amalgamated into one so that Karate-do may pursue and orderly and useful progress into man’s future.”
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Gichin Funaksohi (1868-1957)
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? with thanks to Patrick McCarthy

‘On ko chi shin.’  (To study the old is to understand the new) is the motto of the Shuri Karate Dojo.