| Quote #4
And so I dare to hope,
The speaker recognizes that he has "changed" since his first visit, although he might not have recognized the transformation as it was taking place.
| Quote #5
— I cannot paint
The speaker is now so far removed from his past self that he has trouble describing it. Or perhaps he just has trouble putting it into words.
| Quote #6
That time is past,
The speaker realizes that his innocent, unreflecting enjoyment of Nature is over. He has become conscious of the "presence" in nature, and he can't go back to the way he was.