Composing for the prepared piano is not a criticism of the instrument. I'm only being practical.
Everything I see is something I haven't memorized.
As far as consistency of thought goes, I prefer inconsistency.
Every something is an echo of nothing
My favourite music is the music I haven't yet heard. I don't hear the music I write: I write in order to hear the music I haven't yet heard.
I certainly had no feeling for harmony, and Schoenberg thought that that would make it impossible for me to write music. He said, 'You'll come to a wall you won't be able to get through.' So I said, 'I'll beat my head against that wall.'