Stone in the river

Some say be the river
Always find way
Go further
Never stay at one place
Even for a while.
Try hard, they say
Be the river.
I say, you can't be
The river then you are stone
Even then you do your best
You may feel her by your side
She can go through you
Over your
She can be so close to you
But you can't be her
You're stone in the river
All you can do -
You can stand here
Right where you are
You can grow moss
On your back
And be a rest place
For butterflies.