On having nothing to write

I have nothing to write
but I'll keep on writing,
through the sands of time
the sands keep moving
(5) and my heart keeps ticking
and beating away, as I
write these words 
I thought I had nothing to say, 
but in our sands, our time,
(10) we write words,
whether they are written
or spoken,
heard by many, 
or known only to self,
(15) I might have nothing to write
but these words,
I have written. 

They might mean nothing to
you, or anyone,
(20) but nevertheless these words have
spoken.