O the mind, mind has mountains; cliffs of fall
Frightful, sheer, no-man-fathomed. Hold them cheap
May who ne'er hung there. Gerard Manley-Hopkins, 'The Terrible Sonnets'

Out of the depths it came
I didn't just lose my friend once
I lose him many times still:
at every waking
at every pause in the day
every time I look at the sky - 
with you no longer beneath it - 
Or, I look down at the ground -
and I know you are beneath it.
There is an absence of you
in times present, past & future.
I wander like a ghost
yet I want you to haunt me. 
As I run over your final movements,
your thoughts, on that quiet day in May
I hope, beyond all reason, 
that you were smiling
at the prospect of a return to innocence
to all those you loved & lost 
as I do you.