Sometimes a poem just comes together because it's very much what you believe, and so says almost exactly what you want it to say. I suspect that the rhythm of the poem is partly echoing Runrig's "One Thing".
Reason and Grace
Nothing I am
and nothing I'll be;
my footsteps are washed
by the sands of the sea.
The waves rolling in
will cover all trace
and nothing remain
but reason and grace.
Shout out my name;
the echo will die,
lost on the wind
in the silence of sigh.
My name in the air
cannot hold me in place;
nothing's forever
but reason and grace.
Conquer the world;
the borders all break,
bursting like bubbles
or dreams when we wake;
put up the bronze
of the kings of the race;
it all will fall down
except reason and grace.
My tale will be finished,
the course will be run,
and darkness will fall
with the dousing of sun;
not a bit does it matter,
though tears touch my face:
there is nothing enduring
save reason and grace.