I don't know who Kenton M. Stewart is, but his poem is even accompanied by a beautiful picture of a meandering river:http://www.ecology.info/river-that-meanders.htm
The River That Meanders
Kenton M. Stewart
Oh, the river that meanders has an aimless kind of flow…
in the sense that such a river seems to not know where to go.
Is it right or left, or left or right? Who cares? And I don’t know.
Yet it’s that lack of clear direction that the river seems to show!
And on and on ... At any rate, it all sounds pretty darn idiomatic to me. :-)
And hey, here's a biblical take on the subject:http://www.goodshepherdmilford.org/sermons/se...
Rivers like floods make great metaphors. We can see them as metaphors for our own lives; - from the energized young river of our youth, to the winding meandering river of our old age that empties into the sea.