Playwrights write their own script.
They are the creators of their own plays.
They determine the reality that will play out in their own life.
They know what is real and what is an illusion.
They observe life with sensitive detachment.
Actors follow the script.
It is not their script.
They just act out the drama that someone else has created.
The best actors play their part with great conviction.
Even when they ad lib and enhance their role, they are still fully immersed in the plot.
Actors believe in the reality of their play.
Playwrights re-create the experience of their own reality.