It's the function of a playwright to write. Some playwrights write a large number of plays, some write a small number.
The playwright, along with any writer, composer, painter in this society, has got to have a terribly private view of his own value, of his own work. He's got to listen to his own voice primarily. He's got to watch out for fads, for what might be called the critical aesthetics.
As a playwright, I imagine that in one fashion or another I've been influenced by every single play I've ever experienced.
There are a number of contemporary playwrights whom I admire enormously, but that's not at all the same thing as being influenced.