The whole idea of it makes me feel 
like I'm coming down with something,  
something worse than any stomach ache 
or the headaches I get from reading in bad light- 
a kind of measles of the spirit,  
a mumps of the psyche,  
a disfiguring chicken pox of the soul. 
 
You tell me it is too early to be looking back,  
but that is because you have forgotten 
the perfect simplicity of being one 
and the beautiful complexity introduced by two. 
But I can lie on my bed and remember every digit. 
At four I was an Arabian wizard. 
I could make myself invisible 
by drinking a glass of milk a certain way. 
At seven I was a soldier, at nine a prince. 
 
But now I am mostly at the window 
watching the late afternoon light. 
Back then it never fell so solemnly 
against the side of my tree house,  
and my bicycle never leaned against the garage 
as it does today,  
all the dark blue speed drained out of it. 
 
This is the beginning of sadness, I say to myself,  
as I walk through the universe in my sneakers. 
It is time to say good-bye to my imaginary friends,  
time to turn the first big number. 
 
It seems only yesterday I used to believe 
there was nothing under my skin but light. 
If you cut me I could shine. 
But now when I fall upon the sidewalks of life,  
I skin my knees. I bleed. 
 
-Billy Collins
RIC S. BASTASA
http://www.poemhunter.com/poem/on-turning-ten-for-edgar-andrade-baguio-who-thinks-that-poetry-should-not-narrate/