Quote 16
At that time my virtue slumbered; my evil, kept and innocent life; I think instead that I daily enjoyed it more completely; but I was still cursed with my duality of purpose; and as the first edge of my penitence wore off, the lower side of me, so long indulged, so recently chained down, began to growl for licence. Not that I dreamed of resuscitating Hyde; the bare idea of that would startle me to frenzy: no, it was in my own person that I was once more tempted to trifle with my conscience; and it was as an ordinary secret sinner that I at last fell before the assaults of temptation. (10.21)
Refusing to take on the persona of Mr. Hyde does not exempt Dr. Jekyll from participating in sin.
Quote 17
A fortnight later, by excellent good fortune, the doctor gave one of his pleasant dinners to some five or six old cronies, all intelligent, reputable men and all judges of good wine; and Mr. Utterson so contrived that he remained behind after the others had departed. This was no new arrangement, but a thing that had befallen many scores of times. (3.1)
Dr. Jekyll is friends with only men of good standing, intelligence, and solid judgment of wine. He seems to have assimilated Victorian standards.
Quote 18
"O, I know he's a good fellow –you needn't frown –an excellent fellow, and I always mean to see more of him; but a hide-bound pedant for all that; an ignorant, blatant pedant. I was never more disappointed in any man than Lanyon." (3.3)
Dr. Jekyll disapproves highly of Dr. Lanyon.