From an interview with Mitsuko Uchida in the Guardian:
How would you entice a newcomer to listen to Beethoven’s Fourth Piano Concerto?
When you ask a pianist which of the five Beethoven concertos they prefer, they invariably say the Fourth. Apart from the originality, it has a spirituality that is difficult to describe. I remember [the conductor] Kurt Sanderling saying the slow movement sounds as if God has sent a curse down on the earth in the orchestra, with the piano solo replying like a prayer for help – that is how beautiful it is.
When asked what the biggest threat to classical music is, she replies,
Soundbite culture. Music is like a great painting framed in time. You need all of it.