"A Tune"

I know a certain tune that my life plays;

Over and over I have heard it start

With all the wavering loveliness of viols

And gain in swiftness like a runner's heart.

It climbs and climbs; I watch it sway in climbing

High over time, high even over doubt,

It has all heaven to itself -- it pauses

And faltering blindly down the air, goes out.

-- Sara Teasdale

(from The Collected Poems of Sara Teasdale)