translation.en: My friend was in excellent spirits over the success which had attended a succession of difficult and important cases, so that I was able to induce him to discuss the details of the Baskerville mystery. I had waited patiently for the opportunity, for I was aware that he would never permit cases to overlap, and that his clear and logical mind would not be drawn from its present work to dwell upon memories of the past.
translation.pl: Mój przyjaciel był w wybornym humorze i skorzystałem z tego, aby go wybadać o nieznane mi dotychczas szczegóły sprawy Baskerville.