there is a certain sadness.
do not misunderstand.
i speak not of a kind of sadness–
i speak of its nature.

few human experiences
are universal:

we add to those certainities
our own humanity,
as unique as 
everything in the universe. 

after all, nothing in the universe 
is identical,
if for  no other reason
than each has his own
in spacetime.

no two quarks,
no two humans,
no two galaxies,
can exist in the same
place and time.

all are unique.

yet, in addition
to our very human
we add
a certain sadness,
known only to us,
unable to be shared
with another.