How does stevenson present good and evil in chapter 10 and throughout the novel

In the struggle between Jekyll and Hyde, Stevenson explores the struggle of the human conscience, between good and evil, noble and despicable. Jekyll, who gives in to his evil impulses becomes a prisoner and victim of his own creation. Thus, Stevenson seems to suggest that a noble, pure life is far better than one of discreet immorality. However, Stevenson also portrays the seemingly purely noble men in the novel, Utterson and Lanyon, as weak. Lanyon dies after the shock of Jekyll's transformation, and Utterson repeatedly refuses to accept the truth or pursue the novel's central mystery. Although apparently critical of both worldviews, Stevenson seems to ultimately claim that the noble life is more admirable, as Utterson lives while Jekyll/Hyde dies.