A found answer to Tom Beckett's question

In a recent post at Shadows Within Shadows, Tom Beckett asked: If one doesn't have some idea what a poem should do, why bother to write?

I caught five minutes of a documentary about films & film-making last night, a part where various directors were asked to comment briefly about why they made films. Amongst their answers, which, in the main, gave such things as social conscience & revolution as the reasons, was this from an un-named director, which struck the gong of recognition within my well-into-its-seventh-decade heart.

"I
 film. I
 keep on filming

 to
 soften the
 flight of time."