In creating Hyde, Jekyll breaks the balance between good and evil within himself. Without that balance Jekyll cannot survive. Each time Hyde becomes active, he gains more power over Jekyll and ultimately leads to his downfall. Hyde began with the little things that Jekyll refrained from doing or even thinking about because he knew he would not be accepted by society if he indulged in them, but as he became more powerful, the little "undignified" pleasures turned into murders, and other horrible heinous crimes. The evil that Hyde possessed transformed into something uncontrollable, while Jekyll remained Jekyll, not purely good and not purely evil. In the end, Hyde's wickedness prevailed over Jekyll's normality. Perhaps there was a reason why society originally pushed Jekyll to repress Hyde inside