Read lines 11 and 12 from the poem. The fog laughs low to see it go, / And the white waves watch it with cruel eyes. What central idea do these lines support? Nature is in conflict with man. Nature is jealous of light. Nature is weaker than the lighthouse. Nature has a sense of humor.

The dominant impression is that the life in the sea is a difficult one and solitary, but often voluntarily chosen. It's like some sort of a voluntary exile that is difficult but we choose it for ourselves. It's harsh and difficult but for people who do it it's the only way and they couldn't do it other way.