There's no doubt about it. Arcadia is Tom Stoppard's richest, most ravishing comedy to date, a play of wit, intellect, language, brio and, new for him, emotion. It's like a dream of levitation: you're instantaneously aloft, soaring, banking, doing loop-the-loops and then, when you think you're about to plummet to earth, swooping to a gentle touchdown of not easily described sweetness and sorrow.

Confession: When I went to see The Empire Strikes Back I found myself glancing at my watch. The Force is with us, indeed, and a lot of it is hot air. It's a measure of my mixed feelings about The Empire Strikes Back that I'm not at all sure that I understand the plot. The Empire Strikes Back is about as personal as a Christmas card from a bank.

When Uncle Bob (or Ted or Ray) promised to send a shooting star over the house to mark a young listener's birthday, the young listener, who had hung out the window for an hour without seeing the star, questioned not Uncle Bob (or Ted or Ray), but his own eyesight.

Nothing in Death Hunt makes a great deal of sense, though the scenery is rugged and the snowscapes beautiful.

Horror need not always be a long-fanged gentleman in evening clothes or a dismembered corpse or a doctor who keeps a brain in his gold fish bowl. It may be a warm sunny day, the innocence of girlhood and hints of unexplored sexuality that combine to produce a euphoria so intense it becomes transporting, a state beyond life or death. Such horror is unspeakable not because it is gruesome but because it remains outside the realm of things that can be easily defined or explained in conventional ways.

There's no doubt about it. Arcadia is Tom Stoppard's richest, most ravishing comedy to date, a play of wit, intellect, language, brio and, new for him, emotion. It's like a dream of levitation: you're instantaneously aloft, soaring, banking, doing loop-the-loops and then, when you think you're about to plummet to earth, swooping to a gentle touchdown of not easily described sweetness and sorrow.

It is guaranteed to put all teeth on edge, including George Washington's, wherever they might be.