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Martial arts have two parts. One is external, other internal. The external is physical part. The internal is philosophy of how to be, what kind of person learns martial arts.

"Jet Li Gets Philosophical in Fearless". Interview with Julian Roman, movieweb.com. September 19, 2006.
Martial arts have two parts. One is external, other internal. The external is physical part. The internal is philosophy of how to be, what kind of person learns martial arts.