Answer: the speaker is a poet talking about the ever changing nature of clouds, perhaps as a metaphor for the ever changing nature of life.
Explanation: The poem “The Cloud” by Percy Bysshe Shelley is a lyric, written in anapestic meter, changing in line lengths between tetrameter and trimeter. In “The Cloud,” Shelly invokes the idea of a cloud as an entity narrating her existence in various aspects. Told in 6 stanzas, Shelley has this cloud say a unique perspective on what she is in each one.