The poem describes discovering a field of daffodils alongside a lake, "which is the ecstasy of isolation," and how the recollection of it keeps him perpetually happy. The speaker's reverse personification produces a metaphor of comparing himself to a cloud, establishing a basic oneness between nature and man. This idea is further developed in the following stanza: "I am part of all that lives, / I feel what animals feel; / The blossom sees itself as one with the flower around it, / And the bird with the bird." This figure of speech is used when someone expresses happiness at being by themselves or in their own company. It can also be applied to things that don't necessarily make people else than humans happy like flowers or birds. Indeed, some people say that they are inspired by mountains or oceans when in fact they are only happy thinking about other people. In conclusion, this figure of speech is used when someone expresses happiness at being alone.