Artur Schnabel - Piano Sonata No. 29 in B flat major, Op. 106, "Hammerklavier" - III. Adagio sostenuto

Artur Schnabel quotes

I am attracted only to music which I consider to be better than it can be performed. Therefore I feel (rightly or wrongly) that unless a piece of music presents a problem to me, a never-ending problem, it doesn't interest me too much.