Alfred A. Knoph
"When you play an instrument, and playing comes easily, playing is enough. But slowly, as you play more, what you hear outpaces your ability. This music beyond you, as you are, leads you on, and you ache to lay hold of it. You sit down, you look at your hands, you hold the instrument. You listen to the musicians you admire, who have this same equipment, hands and instruments. Then you look at your own hands again, and it doesn't seem possible. How do they do it? What you want to play shimmers ungraspable in the air, or in the hands of others. I think this is when your story as a musician begins. Playing, you begin to practice. And practice makes "perfect." Now you'll never play the way you wish you could. Now one lifetime is not enough. You'll never be finished practicing."
That says it all right there, that does.