Frank Tallis

"At first, addiction is maintained by pleasure, but the intensity of the pleasure gradually diminishes and addiction is then maintained by the avoidance of pain."

- Frank Tallis

"At first, addiction is maintained by pleasure, but the intensity of the pleasure gradually diminishes and the addiction is then maintained by the avoidance of pain."

- Frank Tallis

"At first, addiction is maintained by pleasure, but the intensity of this pleasure gradually diminishes and the addiction is then maintained by the avoidance of pain."

- Frank Tallis