"Move ahead."
"You see that river a little to my right, I suppose?"
"Of course."
"Very good. That river intersects the city, I rather think."
"Yes."
"Supposing that the Redskins are acquainted with our arrival in these parts, on which side will they apprehend an attack?"
"From the plain, evidently. That is common sense."
"All the better. So the walls will be furnished with sentries, watching the plain, while the river, whence they fear no danger, will be perfectly deserted."
"That is true," Don Miguel said, striking his forehead; "I did not think of that."
"People cannot think of everything," Brighteye observed philosophically.