Complex sentence: Perhaps the most Aristotelian of contemporary playwrights is David Mamet, who embraces the idea of character as "agent of the action", and emphasizes causality in the structure of his plays.
Split into simpler sentences: Perhaps the most Aristotelian of contemporary playwrights is David Mamet. Mamet embraces the idea of character as "agent of the action" and exemplifies causality in the structure of his plays.