A person sits alone in a diner at night, eating quickly, as if the meal were something to get through rather than enjoy. The phrase "night and other night" makes the hours blur together: this isn't one lonely evening but a string of them, each one much like the last.
The second stanza turns from the room to the wider world. Nature, the speaker says, offers great variety, but fear offers only "a home." That line is odd and a little chilling. It suggests that fear is the one thing the speaker keeps returning to, the place where they actually live, while the diner is only a stopover. Or perhaps fear is the one constant that makes every night feel the same.
The mood is hushed, wary, and isolated. The poem is very short and leaves a lot unsaid, so the loneliness feels sharper. We never learn what the speaker is afraid of, and that silence makes the unease linger.