Read the poem. For oft, when on my couch I lie In vacant or in pensive mood, They flash upon that inward eye Which is the bliss of solitude; And then my heart with pleasure fills, And dances with the daffodils. Which sentence best states a theme of the poem? Spending time alone can be gratifying. Reflecting on the past can make one feel sad. It's better to be alone to have time to think. Thoughts of a happier time can brighten a dull day.