William Wordsworth:
The Prelude: Or, the Growth of a Poet’s Mind: 1799, 1805, 1850
…for many days my brain
Worked with a dim and undetermined sense
Of unknown modes of being. In my thoughts
There was a darkness—no familiar shapes
Of hourly objects, 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 my mind
By day, and were the trouble of my dreams.