We can think of ourselves as musical instruments that imprint the world in a unique way. Our body is the instrument, our nerves are the strings, and the musician is our spirit. When in a music store, if yuou pluck a string on a guitar, all the other guitars in the room will vibrate to that tone. What type of music are you making?
Leonardo da Vinci knew that God helps those who help themselves and that this could be hard work. The labor that brings us all good things is more than just our effort in the outer world — it is a reflection of our inner work and ethical awareness. Leonardo's prayer illustrated this: "Thou, O God, dost sell unto us all good things at the price of labor."