This is from a song called "Bright Eyes" sung by Art Garfunkle in the movie Watership Down. The song was sung as the rabbit Hazel passed away.

Bright eyes,
Burning like fire.
Bright eyes,
How can you close and fail?
How can the light that burned so brightly
Suddenly burn so pale?
Bright eyes.

Rest in Peace sweet Jessica. My candle for you burns in the window each night.