From the excerpt of "Dover Beach" by Matthew Arnold, the line "...on the French coast, the light/Gleams and is gone..." obviously symbolizes the impermanence of life. The light on the French coast is like an opportunity presented to us, once. We must be ready once this opportunity comes.
In greek methology, one famously unable to resist tempation is the guy named Tityus. Tityus is a giant and was the one who assaulted the goddess Leto when she was traveling to the shrine of Delphoi. Tityus was slain by the son of Leto.
