Director Sean Mathias and his talented quartet of actors (they are billed above the title alphabetically as Billy Crudup, Shuler Hensley, Ian McKellen and Patrick Stewart) do lovely service to both of them. No big bangs and whistles at the Cort Theatre; just a solidly acted pair of straightforward mountings that, despite all the attention paid to the two more famously named stage artists, serve the playwrights very well.