Nature is a dominant theme in Romantic poetry. It is the theme, above all others, that is most often identified with Romanticism.
Nature is especially associated with Romantic poet William Wordsworth, who many regard as the father of English Romanticism. Wordsworth loved nature, but more significantly, believed people would come closer to God or the divine force if they became closer to nature. Nature, created by God, is the pure manifestation or expression of God on earth, according to Romantics like Wordsworth, while civilization, especially cities, represent the corruption of God's plan.
Wordsworth's poems extol nature over and over as a healer and a solace. The perhaps paradigmatic or model Wordsworthian nature poem is "I Wandered Lonely as a Cloud." First, it tells a story in simple words: a man is wandering around in nature, feeling lonely, when he comes across a beautiful field of wild daffodils swaying in the breeze in front of a lake. They look as if they are dancing. This sight surprises him, lifts his spirits, and takes away his loneliness. Nature becomes a solace and joy to him. Second, in cold weather or when in a sad mood, he can close his eyes, remember the scene of the daffodils, and recreate the happy feelings he experienced. Nature is simple, it is free, it lifts our souls, and it can be remembered to bring back its joy over and over again.
Other Romantic poets exalted nature, such as William Blake, who saw it as a place of innocence in opposition to the corrupt city, and John Keats, who found beauty and solace in the song of the nightingale or the autumn season.