This is my read of the last paragraph--

He whose beauty is past change 主語
fathers-forth 謂語
All things counter, original, spare, strange; +
Whatever is fickle, freckled (who knows how?) +
With swift, slow; sweet, sour; adazzle, dim; 賓語

按這種解釋，

counter is adjective;
freckled is adjective;
'with' is for all things before it, introducing secondary characteristics.

For example, a thing that is 'original' could be either swift or slow. Same to a thing that is 'fickle'. It could be either adazzle or dim.

The difficulty of the explanation is that I need to decompose this paragraph and rearrange it.