His eyes amazed with all that leapt to light,
Dazed with a myriad details, lost the whole.
He saw the law whereby the few were chosen
From forms already at variance. Back and back
He traced his law, and every step was true.
And yet his vera causa was no Cause,
For it determined nothing. It revealed,
In part, how subtler variants had arisen
From earliest simpler variants, but no more.
...