from the same book:
We are so convinced that because our technology is evolving, we must be doing the same. We think that because we have cell phones with cameras in them, we must be more advanced than someone who lived 2500 years ago; but in fact, those people in the past were much more aware of their internal world than we are because they weren’t distracted by technology. We have all this technology, which is supposed to make our lives easier, and yet it doesn’t. They had none of the technology but had much simpler lives and perhaps a better understanding of how their minds worked.