| Quote #4
"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. Lanyon and Dr. Jekyll are estranged because they disagree over science. This suggests an initial frailty to their friendship in contrast to the strength of Lanyon and Utterson’s relationship.
| Quote #5
He gave his friend a few seconds to recover his composure, and then approached the question he had come to put. (2.10)
Mr. Utterson is considerate, but never abandons his objectives.
| Quote #6
Or else he would see a room in a rich house, where his friend lay asleep, dreaming and smiling at his dreams; and then the door of that room would be opened, the curtains of the bed plucked apart, the sleeper recalled, and lo! there would stand by his side a f figure to whom power was given, and even at that dead hour, he must rise and do its bidding. (2.13)
Rather than believe that Dr. Jekyll is in fact friends with Mr. Hyde, Mr. Utterson’s first conclusion is that Mr. Hyde has some sort of control over Dr. Jekyll. This interpretation is most likely colored by their friendship.