What connection does the author draw between Jekyll and Hyde and human behavior

Human behavior is often a product of one’s conscious control. During the day, Dr. Jekyll appeared to be that respectable gentleman doctor who was all kind and pleasant. At night, his gruesome side, Mr. Hyde, came out in abandon under the cloak of darkness. He would do unimaginable things that were the exact opposite of Jekyll’s good deeds. The author portrays the two realities in human behavior. In each person’s inner being are both good and evil. It all depends on him which side would dominate him and that side is what is revealed in his outward behavior.