how does dicks behavior in prison show he feelsno remorse for the crime?

Perry is visited by Don Cullivan, an old friend from his Army days who, upon hearing the news of Perry’s arraignment, volunteers to testify as a “character witness” for Perry. Cullivan, a devout Catholic, dines with Perry and attempts to comfort him with thoughts of God’s mercy. Perry admits that he is not bothered by the murders and is hence unable to feel remorse.