A Letter Unsent

Adapted (edited, reassembled) from a letter typed to a friend in about 1990, and concerning a series of accidents I suffered at the time, but never finished, and never sent, and recovered only recently, as a piece of scrap paper, a remnant from a long lost past.

Dear...
I haven't been in touch
for a long time.
Sorry.
The last time
I saw you
was in
St. Christopher's Place.
It was a lovely evening...
when I knocked
that chair over.
I am sorry.
Since then,
I've had not
a few accidents
of that kind.
Just three days ago,
I slipped out
in a garden
at a friend's house...
and keeled over,
not once,
not twice,
but three times,
like a log...
clonking my nut
so violently
that people heard me
in the sitting room.
What's more,
I can't remember
a single sentence
spoken
all evening.
The problem is...