You are all spirits. It is not that you "have" a spirit. To have a spirit implies that you are spirit and that you are also something else. Human beings are spirits. Being a human being is one of the ways of being a spirit.
Any show that's bringing in a young audience is doing a good thing, because that's the only way that theater will continue to grow. All the other audience members are going to be dead soon!
For a finite-size system to persist in time (to live), it must evolve in such a way that it provides easier access to the imposed currents that flow through it.