Question

How does this passage develop the theme "Evil can never truly hide itself”? Dr. Jekyll tells the men to go away before slamming the window closed. Dr. Jekyll closes the window and makes the men nervous by following them home. Utterson and Enfield are horrified when they see Jekyll’s transformation. Utterson and Enfield are ashamed that they did not stay to help Dr. Jekyll.

Answer 1

"Evil can never truly hide itself" is stating that the truth is always going to be shown and bought into the light.

Answer 2

Jekyll believed that man does not have one side ‘but truly two’. He asserts that human soul struggling for mastery is a battleground for a “fiend” and an “angel”. Therefore, it can be separated by bringing the dark side into being. :)