At the core, what does your martial art teach?

when down nitty-gritty, being taught in art through individual components (kata, forms, waza, etc.)? when break down, if act using core lessons, feel you're performing art if it's not techniques used teach it?

also, art if you're answering?

example:
study taijutsu.
@ core, comes down body movement -- shifting myself , body in such way keep straight, hips , shoulders in line, , maintain balance, while taking space, balance, , alignment of opponent. performing technique taught in art, long maintain principles, feel i'm performing taijutsu.

i'm curious thoughts on subject.

when down nitty-gritty, being taught in art through individual components (kata, forms, waza, etc.)? when break down, if act using core lessons, feel you're performing art if it's not techniques used teach it? also, is...

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