Answer and Explanation:
In William Wordsworth's poem "Lines Composed a Few Miles Above Tintern Abbey," the speaker believes the memories of this moment he and his sister are experiencing together will bring them joy and peace.
The poem is a type of epiphany since the speaker is now realizing how to truly appreciate nature's beauty. He sees the grass, the flowers, and trees from a different, more mature and reflective perspective now. And he believes the memory of this place and moment will forever bring him and his sister a sense of happiness. Even if difficult times lie ahead, they can always return to that place in their minds:
"Thy memory be as a dwelling-place
For all sweet sounds and harmonies; oh! then,
If solitude, or fear, or pain, or grief,
Should be thy portion, with what healing thoughts
Of tender joy wilt thou remember me..."