Once there was only one ball, and it hypnotized us. It seemed to cause our joy and pain and our pleasure and misery. It seemed to cause everything, and everything depended upon it. That ball was the world.
Now another ball has appeared, and it has become the new star of the show. The show is human evolution. This new ball is our interior experiences. Previously we did not pay attention to them until they became too painful to ignore, for example, our rage, jealousy, or grief. We never thought about them in the context of our evolution. On the contrary, they hindered our ability to evolve – to manipulate and control ball one (the world). Now ball two (our interior experiences) is more important to our evolution than ball one!