Fill a large pot with salty water and bring to a boil. In the meantime, melt the butter and add the pat dried sage leaves to it. Put the butter back on low fire and keep it for 2 minutes, while stirring from time to time. If the water in the pot is boiling, add the pasta and make sure you stick to exact time stated in the instructions on the pack. Immediately after the pasta is ready, drain the water, so to slow the cooking process. Leave the pasta in the water for a minute or two more. Then add the drained pasta to the sage butter and cook it for additional 10-15 seconds, constantly stirring. Sprinkle with the Parmesan shaves and leave to rest for couple of minutes. Garnish with fresh sage leaves and serve immediately.