The "nugget" that really stuck with me was when he said (about the Waldstein) that the music doesn't start with the first note. It starts in the silence before you begin playing and ends in the silence after you stop. So when you begin your first notes, you are continuing the music out of the silence. Keeping this in mind really changes the way I play.
This is a profound comment and I agree with this completely. Thank you for posting! Good luck and have fun practicing.
This is an interesting case really. In 'music quickens time' Berenboim develops the idea of openings that emerge out of silence as opposed to those that interrupt silence. The Waldstein could maybe be interpreted either way although I think B would argue that because the opening dynamic is pp, you start off in the realm of silence. But the alternative view is that, quiet though it is, that opening is so insistent, so worried and anticipates such a maelstrom, that it's more of an interruption.
For the record, I'm so-so on Berenboim's playing (who am I to talk though really?) but I find his writing to be very interesting and illuminating. Deeply smart guy.