“- Aulon: But how do you know that these voices aren't just really you?
- Joan of Arc: They are me. That's how God speaks to me. Even you could hear them if you listened hard enough.”
Desmond Harrington - Aulon
Milla Jovovich - Joan of Arc

“You've got voices pulling you in all different directions. There's only one voice that matters.”

Arthur Cartwright - Little B

“- Darlene: Are you aware that you're yelling?
- Eddie: My voice is raised in emphasis. It's a perfectly legitimate use of volume.”
Robin Wright - Darlene
Sean Penn - Eddie

- Dr. John Dolittle: Albert Einstein, he came in with that wild hair and everybody thought he was crazy. And Muhammad Ali, he came out saying what rounds he was going to beat people in, going "I'm the greatest!", everybody thought he was crazy. And Joan of Arc, she heard voices.
- Maya Dolittle: Like you, daddy?
Eddie Murphy - Dr. John Dolittle
Kyla Pratt - Maya Dolittle

“The voice you hear is not my speaking voice - but my mind's voice. I have not spoken since I was six-years-old. No one knows why - not even me. My father says it is a dark talent, and the day I take it into my head to stop breathing will be my last.”

Holly Hunter - Ada