Quote 22
When I came to myself at Lanyon's, the horror of my old friend perhaps affected me somewhat: I do not know; it was at least but a drop in the sea to the abhorrence with which I looked back upon these hours. A change had come over me. It was no longer the fear of the gallows, it was the horror of being Hyde that racked me. (10.25)
The disapproval of an old friend has the power to make Dr. Jekyll fear the fate of permanently being Mr. Hyde.
Quote 23
Two doors from one corner, on the left hand going east the line was broken by the entry of a court; and just at that point a certain sinister block of building thrust forward its gable on the street. It was two storeys high; showed no window, nothing but a door on the lower storey and a blind forehead of discoloured wall on the upper; and bore in every feature, the marks of prolonged and sordid negligence. The door, which was equipped with neither bell nor knocker, was blistered and distained. Tramps slouched into the recess and struck matches on the panels; children kept shop upon the steps; the schoolboy had tried his knife on the mouldings; and for close on a generation, no one had appeared to drive away these random visitors or to repair their ravages.
Mr. Enfield and the lawyer were on the other side of the by-street; but when they came abreast of the entry, the former lifted up his cane and pointed.
"Did you ever remark that door?" he asked; and when his companion had replied in the affirmative. "It is connected in my mind," added he, "with a very odd story." (1.4)
Mr. Hyde’s stomping grounds, and the site of Mr. Enfield’s "old story," is not well-kept or respectable. The appearances of buildings reflect the activities inside them.
Quote 24
And indeed the worst of my faults was a certain impatient gaiety of disposition, such as has made the happiness of many, but such as I found it hard to reconcile with my imperious desire to carry my head high, and wear a more than commonly grave countenance before the public. Hence it came about that I concealed my pleasures; and that when I reached years of reflection, and began to look round me and take stock of my progress and position in the world, I stood already committed to a profound duplicity of me. (10.1)
Dr. Jekyll admits that his worst predisposition is toward a little too much happiness or "gaiety," but he opts to suppress that character trait in order to keep up the appearance of a very somber man.