"You get used to being evil," reflects how individuals can become desensitized or accustomed to morally questionable actions over time. In the context of the book The Lord of Opium by Nancy Farmer, this quote suggests that characters may develop a hardened attitude as they engage in or witness unethical behavior repeatedly, making evil seem like a normal part of their lives.

This quote highlights the potential for moral decline when one constantly faces corrupt or evil circumstances. It illustrates how the environment and repeated exposure can lead to accepting or even embracing such behavior, raising questions about the nature of morality and the human capacity for change under difficult circumstances.