Who is Hans Keilson?

In today's NYT Book Review, Francine Prose comes right out and says it:

For busy, harried or distractible readers who have the time and energy only to skim the opening paragraph of a review, I’ll say this as quickly and clearly as possible: “The Death of the Adversary” and “Comedy in a Minor Key” are masterpieces, and Hans Keilson is a genius.

And the SF Chronicle talks to the translator of Comedy, Damion Searls...whose fascinating piece on Keilson's life and work will appear in the next issue (Sept.) of The Believer. Stay tuned!