Boat on Ullswater

I left my Bark, -
And through the meadows homeward went, in grave
And serious mood; but after I had seen
That spectacle, for many days, my brain
Worked with a dim and undetermined sense
Of unknown modes of being; o'er my thoughts
There hung a darkness, call it solitude
Or blank desertion. No familiar Shapes
Remained, no pleasant images of trees,
Of sea or Sky, no colours of green fields,
But huge and mighty Forms, that do not live
Like living men, moved slowly through the mind
By day, and were a trouble to my dreams.

[from Wordsworth's Prelude, 'Boat stealing']