“As you deal with thumb-crossings, or fingerings for the F-sharp-minor scale, or chromatic scales in double thirds, it is hard to accept that these will eventually allow you to probe eternity in the final movement of Beethoven’s last sonata. Imagine that you are scrubbing the grout in your bathroom and are told that removing every last particle of mildew will somehow enable you to deliver the Gettysburg Address.”
Source : "Every Good Boy Does Fine" by Jeremy Denk, www.newyorker.com. April 8, 2013. 
