It's a day like any other on which one has to do one's work.

" Seryozha looked intently at the teacher, at his scanty beard, at his spectacles, which had slipped down below the ridge on his nose, and fell into so deep a reverie that he heard nothing of what the teacher was explaining to him.

He knew that the teacher did not think what he said; he felt it from the tone in which it was said.