She knew that this silent, motionless portal opened into the street; if the sidelights had not been filled with green paper, she might have looked out on the little brown stoop and the well-worn brick pavement. But she had no wish to look out, for this would have interfered with her theory that there was a strange, unseen place on the other side--a place which became, to the child's imagination, according to its different moods, a region of delight or terror.