"At the top, 12 and 13," the porter answered Levin's inquiry.
"At home?"
"Sure to be at home."
The door of No. 12 was half open, and there came out into the streak of light thick fumes of cheap, poor tobacco, and the sound of a voice, unknown to Levin; but he knew at once that his brother was there; he heard his cough.
As he went in the door, the unknown voice was saying:
"It all depends with how much judgment and knowledge the thing's done."