Wordsworth's claim that his vision of London is the best on
earth is clearly an exaggeration, not to mention impossible to
verify. But it's an innocent exaggeration, one that puts us "in
the moment" of his passing experience. It's really not much
different from an expression that many people use all the time
nowadays: saying that such-and-such is the most fun ever, or the
best movie ever, or the most awkward party ever. In other words,
Wordsworth talks a little like a contemporary teenager. - Line
1: Earth, you really outdid yourself on this one. The claim that
no sight is more beautiful than the view from Westminster Bridge
is a case of hyperbole, or exaggeration. - Line 2: The word
"dull" suggests a contrast with a knife or some other sharp
object. In the implicit metaphor, the dull person's soul has
been worn down by time and experience. - Line 3: To say that
something is "touching in its majesty" is almost a paradox, a
contradiction in terms. A touching sight is intimate and
personal, while a majestic one