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?

It's better to be alone to have time to think.

Spending time alone can be gratifying.

Thoughts of a happier time can brighten a dull day.

Reflecting on the past can make one feel sad.