I do not see you often with my eyes,
But often you are with me in my heart.
We rarely speak, but there are deeper ties
That keep us close while we must be apart.
Friendships don’t depend on sights and sounds,
But on the mysteries of need and grace.
You’re with me always, unrestrained by bounds,
In some sweet field more permanent than place.
(from http://www.poemsforfree.com )