In order to fully comprehend the world in which Stevenson was raised, it is necessary to understand that there were two Edinburghs, both of which helped mold his personality and life outlook. On the one hand, there was the respectable, conventional, deeply religious, and polite New Town. On the other hand was a much more bohemian Edinburgh, with brothels, shady characters and underhanded dealings. The juxtaposition of these starkly different parts of town made a deep impression on Stevenson and strengthened his fascination with the duality of human nature, later providing the theme for The Strange Case of Dr. Jekyll and Mr. Hyde.