You are also caught with the fact that man is a creature who walks in two worlds and traces upon the walls of his cave the wonders and the nightmare experiences of his spiritual pilgrimage. ↗
The audience plays a huge part in how a piece will actually form. They really allow the performers to walk a tightrope in a way that never seems to happen in the privacy of your own four walls. I'm listening to the audience, and they're listening to me. ↗
Perhaps my favourite story is 'Le Passe-Muraille' by Marcel Ayme. It's about a guy who wakes up with a weird faculty that means he can walk through walls. He's a very shy clerk, and he uses it to get revenge, or vent his frustration. ↗