The next day Ericson was much better, received Robert with a smile, and went out with him for a stroll, for all his companions were gone, and of some students who had arrived since he did not know any. Robert took him to his grandmother, who received him with stately kindness. Then they went out again, and passed the windows of Captain Forsyth's house. Mary St. John was playing. They stood for a moment, almost involuntarily, to listen. She ceased.
'That's the music of the spheres,' said Ericson, in a low voice, as they moved on.
'Will you tell me what that means?' asked Robert. 'I've come upon 't ower an' ower in Milton.'
Thereupon Ericson explained to him what Pythagoras had taught about the stars moving in their great orbits with sounds of awful harmony, too grandly loud for the human organ to vibrate in response to their music—hence unheard of men. And Ericson spoke as if he believed it. But after he had spoken, his face grew sadder than ever; and, as if to change the subject, he said, abruptly,
'What a fine old lady your grandmother is, Robert!'
'Is she?' returned Robert.
'I don't mean to say she's like Miss Letty,' said Ericson. 'She's an angel!'
A long pause followed. Robert's thoughts went roaming in their usual haunts.
'Do you think, Mr. Ericson,' he said, at length, taking up the old question still floating unanswered in his mind, 'do you think if a devil was to repent God would forgive him?'
Ericson turned and looked at him. Their eyes met. The youth wondered at the boy. He had recognized in him a younger brother, one who had begun to ask questions, calling them out into the deaf and dumb abyss of the universe.