Dr. Watson describes a conversation between Stapleton and Sir Henry Baskerville about the possibility of supernatural phenomena. What does Watson report to Holmes about Stapleton?

From the text:

Sir Henry was much interested and asked Stapleton more than once whether he did really believe in the possibility of the interference of the supernatural in the affairs of men. He spoke lightly, but it was evident that he was very much in earnest. Stapleton was guarded in his replies, but it was easy to see that he said less than he might, and that he would not express his whole opinion out of consideration for the feelings of the baronet. He told us of similar cases, where families had suffered from some evil influence, and he left us with the impression that he shared the popular view upon the matter.