A Place to Share

I only know what I know
and nothing more than that.
Sometimes I don't know how I know
only that I know.
I know you know what your know
from what you once knew.
How can I know what I once knew
when what I once knew I don't know now.
Is there anyone that knows
or once knew all there is to know?
Now, I once thought I knew
all there was to know.
But I know now
I only know what I know
And that is simply this,
I don't know doo!
Do you?
:)