My love, when I gaze on thy beautiful face,
Careering along, yet always in place -
The thought has often come into my mind
If I ever shall see thy glorious behind.
It could be delivered by mail, email, by hand, or even by pigeon.
It is sometimes short, sometimes lengthy, and with deep, profound, or simple feelings.
What is it?
It is energy and motion, it can fly across the ocean.
It can listen and even speak, it can see and even seek.
It eats neither fruit nor gruel, it eats energy and fuel.
Better say: It doesn't eat; It is transformed into heat.
What is it?