Because one option could be better for you and worse for someone else or the other way around.
They all apply to his philosophical system... im not sure what the answer is for the other question you posted though
Form a perfect union, means to strengthen the relationship among the states.
In the first stanza the speaker stands before an old Grecian urn and speaks to it. He is concerned with the picture frozen in time. It is the "still unravishe'd bride of quietness" the "foster child of silence and slow time". He also describes the urn as a historian that can tell a story. He wants to know about the pictures on the side of the urn and ask what legend it can tell and from where they come. He saw a picture of a group of men chasing a group of women and wonders what a mad pursuit? What struggle to run away?
A.The sea calmed, but no boats left the shore is correct