Quote 40
"We had," was the reply. "But it is more than ten years since Henry Jekyll became too fanciful for me. He began to go wrong, wrong in mind; and though of course I continue to take an interest in him for old sake's sake, as they say, I see and I have seen devilish little of the man. Such unscientific balderdash," added the doctor, flushing suddenly purple, "would have estranged Damon and Pythias." (2.9)
Dr. Jekyll hides information even from his lawyer.
Quote 41
This last, however, was not so easy of accomplishment; for Mr. Hyde had numbered few familiars—even the master of the servant maid had only seen him twice; his family could nowhere be traced; he had never been photographed; and the few who could describe him differed widely, as common observers will. Only on one point were they agreed; and that was the haunting sense of unexpressed deformity with which the fugitive impressed his beholders. (4.18)
Observers constantly note that Mr. Hyde has an indescribable deformity; the lack of detail lets readers imagine all sorts of terrible facial features.
Quote 42
"I have been wanting to speak to you, Jekyll," began the latter. "You know that will of yours?"
A close observer might have gathered that the topic was distasteful; but the doctor carried it off gaily. (3.2)
Dr. Jekyll does not handle unpleasant conversations by resorting to violence, as some people do (i.e., Hyde).