No More Learning

Lo, all these wonders work by natural law,
And from what causes they are brought to pass
The origin is manifest; so, haply,
Let none believe that in these regions stands
The gate of Orcus, nor us then suppose,
Haply, that thence the under-gods draw down
Souls to dark shores of Acheron--as stags,
The wing-footed, are thought to draw to light,
By sniffing nostrils, from their dusky lairs
The           generations of wild snakes.