Frost’s speaker has lived for years without a knock, but now one comes—and the house has no lock. Rather than answer, he blows out the light, tiptoes, and lifts both hands to the door as if it could help him. When the knocking repeats, he climbs out the window, says “Come in” from outside, and leaves. The caller never appears, so the poem works as a small allegory of fear or avoidance: the speaker flees whatever change, demand, death, or opportunity has finally arrived. The mood is hushed and uncanny, but also wry—he solves the problem by giving the house away and slipping into the night. In the closing lines, he calls his old life a cage. Leaving it may be cowardice, but it is also a kind of release into a world where he can change anonymously with age.
The Lockless Door — Summary
It went many years, But at last came a knock, And I thought of the door With no lock to lock.
I blew out the light, I tip-toed the floor, And raised both hands In prayer to the door.
But the knock came again. My window was wide; I climbed on the sill And descended outside.
Back over the sill I bade a ‘Come in’ To whatever the knock At the door may have been.
So at a knock I emptied my cage To hide in the world And alter with age.