Wordsworth lived in the Lake District of England. It is a beautiful place, and he used to take many walks.
Stanza One: I wander alone like a single cloud in the sky floating over valleys and hills. Suddenly I see a large field of daffodils. They are beside the lake and beneath the trees. The wind flutters their petals and makes them dance in the breeze.
Stanza Two: There are as many of them as there are stars in the Milky Way. They stretch as far as the eye can see along the edge of the bay. I saw ten thousand at a time, all tossing their flowers in a spirited dance.
Stanza Three: The waves of the bay beside them also danced. But the daffodils outdid the sparkling waves in happiness. A poet could not help but be happy in the company of such a cheerful sight. I watched, and I watched, but I had no idea how important this sight was to me.
Stanza Four: For often, when I am lying on my couch in a thoughtful mood, those daffodils flash into my mind, which is the good aspect of being alone with your thoughts. When this happens, my heart fills with happiness and dances with the daffodils.