I can picture Wordsworth yelling these lines angrily standing on the shore and shaking a fist. He feels it would be so much simpler to go back the pagan beliefs of the Greeks of giving a sense of divine to all things of nature. Proteus was one of the mythological Greek gods of the sea, and Triton was the son of Poseidon and Aphrodite whose horn was a conch shell for calming or stirring the waters.