The Lockless Door by Robert Frost — Read

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.