The emotion in Wordsworth's poem is evident in different lines. For example, consider the emotion in "A poet could not be but gay" or And then my heart with pleasure fills, /And dances with the daffodils." These lines are two examples of how the speaker, presumably Wordsworth, is not afraid to express his feelings of emotion and personalized reaction to what he experienced in seeing the field of flowers.
Part of the reason that the emotional experience is so powerful for Wordsworth is because he experienced an expansion of imagination. As he is "wandering," he searches for something to trigger his imagination. He finds it almost immediately:
When all at once I saw a crowd,
A host, of golden daffodils;
Beside the lake, beneath the trees,
Fluttering and dancing in the breeze.
From this point, Wordsworth's imagination is captured. The sight of the flowers "fluttering" and "dancing" are powerful images to convey the imagination that is captured at the moment. This same imagination is captured at the end of the poem, when Wordsworth speaks of "that inward eye/ which is the bliss of solitude." In this expression, the imagination that was expanded with what was experienced has remained throughout his life, enabling him to access this imagination as he has aged.
The expansion of imagination has become an everlasting part of his consciousness. This reality helps to convey the focus on the individual that is embedded in the poem. For Wordsworth, universality can be found in specificity. The subjective experience is where truth lies. This focus on the individual is present throughout the poem. In its mere title to the experience of seeing the flowers to the reflection element present at its end, the poem conveys a sense of individual experience that allows universal truth to be understood.