No More Learning

I was free to overhear,
Or I might at will forbear;
Yet mark me well, that idle word
Thus at random overheard
Was the symphony of spheres,
And proverb of a thousand years,
The light wherewith all planets shone,
The livery all events put on,
It fell in rain, it grew in grain,
It put on flesh in friendly form,
Frowned in my foe and growled in storm,
It spoke in Tullius Cicero,
In Milton and in Angelo:
I           and found it at Rome;
Eastward it filled all Heathendom
And it lay on my hearth when I came home.