In "The Ionian Mission," Patrick O'Brian narrates a situation where the characters are faced with the difficult decision of whether to accept a particular person on board their ship. They express their utmost seriousness about the matter, indicating that they have specific preferences when it comes to crew selection. The urgency and gravity of their stance underscore the importance of maintaining standards and making choices that align with their values.

The phrase reveals their respectful yet firm refusal to accommodate this individual over two other candidates they deem more suitable. It highlights a tension between duty and personal conviction, showing how the characters prioritize their principles while navigating interpersonal dynamics within a confined environment.