Answer:
What measures out time until in time all is smashed to it?
This is needed both for courage and hardcover books.
If a man carried my burden, he would break his back. I am not rich, but leave silver in my track.
Held firmly in the hands, like a sword it cuts deep. Bloodless strokes, all, then forward we leap.
My second is performed by my first, and it is thought a thief by the marks of my whole might be caught.
If you can get this professional's attention you can get where you need to go for a price.