Kung fu was made so the monks could train their bodies and move their bodies with strength, so they could be physical enough to gain mental enlightenment. Before that, they kept falling asleep when [masters] were trying to teach them.
RZADo the knowledge, meaning: look, listen, observe, and also respect. If you do that, you'll have a strong foundation to build anything you want to do in life upon. Know before you do. Look before you leap. And if you want to follow in my footsteps, make sure you step in the ones that went in the right direction.
RZA