I know, and none so well, my darling ends

Are proved impossible: no less, no less,

Even now what humors me, fond fool, as when

Their faint ghosts sit with me and flatter me

And send me back content to my dull round?

How can I change this soul?—this apparatus

Constructed solely for their purposes,

So well adapted to their every want,

To search out and discover, prove and perfect;

This intricate machine whose most minute