Et In Arcadia Ego
Today's Google doodle for Ada Lovelace's 197th birthday reminded me, inevitably, of Byron, clever women and computers. And thus my mind came to rest on Tom Stoppard's greatest play, Arcadia. Here is a great article explaining just why it's so brilliant (the article contains a spoiler but there's a warning beforehand for anyo0ne who doesn't know the play).
I remember listening to a radio broadcast of the original production (suitably adapted) for sound only, with Rufus Sewell, Felicity Kendall, Bill Nighy and other marvellous people. Not many pieces of drama have ever made me cry: the end of Cyrano de Bergerac, the end of Die Walkure, the end of Silent Running - and the end of that broadcast of Arcadia.
If you ever have a chance to see it, do. Failing that, buy a copy and read it. It won't be quite as good, but it's still marvellous.