"I have heard some mention of it," she said, "but no one that I have talked with seemed to understand very much about it. Just what is it and what will it do?"
"It is a ship that flies through the air faster than a bird can wing," I replied.
"But what good will that be?" she demanded.
"It will carry people quickly and safely from one place to another," I explained.
"You don't mean to say that people will ride in it!" she exclaimed.
"Why, certainly; why else should I build it?"
"But what will keep it in the air? Will it flap its wings like a bird?"
"No; it will soar like a bird on stationary wings."
"But how will you get through the forests where the trees grow close together?"
"I shall fly over the forests."