What we are after is the root and not the branches. The root is the real knowledge; the branches are surface knowledge. Real knowledge breeds 'body feel' and personal expression; surface knowledge breeds mechanical conditioning and imposing limitation and squelches creativity.
Bruce LeeA powerful athlete is not a strong athlete, but one who can exert his strength quickly. Since power equals force times speed, if the athlete learns to make faster movements he increases his power, even though the contractile pulling strength of his muscles remains unchanged. Thus, a smaller man who can swing faster may hit as hard or as far as the heavier man who swings slowly.
Bruce Lee