Thanks for reading. It's all very tricky, isn't it?
I think that it's important to keep focussing on the important distinction between 'prove' and 'suggest'. I assume the physicists quoted were rejecting the idea that quantum mechanics offered proof, as some of the New-Agers might claim.
Regarding Heisenberg, I only have Capra's statement to go on, so can't explain any apparent contradiction. Most of what I’ve read of Heisenberg seems to fall on my side of the fence.
Planck is obviously making an assumption, not saying it proves anything, but this was based on his scientific understanding. It fits with other quotes I've made from Jeans, Heisenberg, Eddington, and Bohm. I'm willing to go along with him and them.
I personally believe that there is much in between the emptiness and the material world, various levels of being.
Wilber may well say that nobody is going to have a mystical experience from studying quantum physics alone, but nobody that I'm aware of is claiming that. It's so obviously true, therefore irrelevant and merely a red herring.
I also wrote an article critical of Rovelli's Helgoland if you have time:
