It is the half-views are disastrous still;
But size a thing up fully, seize the whole,
And reason then has ground to go upon
For its acceptance or rejection; but
What is half-known, like undigested food,
Ferments, and sourly taints the mental gorge
Until it rises; ignorance so heaves
His good things with his bad into the ditch.
Robert Crawford
http://www.poemhunter.com/poem/half-views/
