Munen muso.
Great martial artists achieve what is called 'munen muso'. It's the ability to act without thinking. Professional athletes might call it the 'zone'. Big wave surfers might call it 'flow'. Businessmen might call it 'momentum'. It's not so much the name that matters but the feeling. It's a state of mind where thinking is replaced with knowing; and deciding, doing. To achieve 'munen muso', we must meticulously master our craft until it is knitted into the fabrics of our beings. Our crafts must become as much a part of us as our hearts and souls.