- Charlie Chan: Perfect case, like perfect doughnut, has hole.
- Inspector Renard: Ha, I see. Same old pessimist, aren't you?
- Charlie Chan: Optimist only sees doughnut. Pessimist sees hole.
- Max Corday: [in a condescending pidgen English/Chinese accent] Me happy know you. Mebbe you likee havee little drinkee?
- Charlie Chan: Very happy to make acquaintance of charming gentleman.
- [imitating Corday]
- Charlie Chan: Me no likeee drinkee now - perhaps later.
- Yvette Lamartine: Too bad you don't dance, Mr. Chan.
- Charlie Chan: Mud turtle in pond more safe than man on horseback.
- Charlie Chan: [after giving money to a beggar at aerodrome] It is always good fortune to give alms upon entering city.
- Charlie Chan: Wait here - observe closely.
- Lee Chan: Observe what?
- Charlie Chan: Don't know. Good detective never ask what and why until after he see.
- Albert Dufresne: Be assured we'll help you to get to the bottom of this, Mr. Chan.
- Charlie Chan: Must turn up many stones to find hiding place of snake.
- Charlie Chan: We must follow.
- Lee Chan: Who? Him?
- Charlie Chan: Important fox must not know hounds pursue.