Spaceland might desire—I must be content with saying that I succeeded at last in persuading her to return quietly to her household duties without eliciting from me any reference to the world of Three Dimensions. This done, I immediately sent for my grandson; for, to confess the truth, I felt that all that I had seen and heard was in some strange way slipping away from me, like the image of a half-grasped, tantalizing dream, and I longed to essay my skill in making a first disciple.
When my grandson entered the room I carefully secured the door. Then, sitting down by his side and taking our mathematical tablets—or, as you would call them, Lines—I told him we would resume the lesson of yesterday. I taught him once more how a Point by motion in One Dimension produces a Line, and how a straight Line in Two Dimensions produces a Square. After this, forcing a laugh, I said, “And now, you scamp, you wanted to make me believe that a Square may in the same way by motion ‘Upward, not Northward’ produce another Figure, a sort of extra Square in Three Dimensions. Say that again, you young rascal.”