In Henry James's "The Portrait of a Lady," the notion of happiness is captured through the imagery of a swift carriage ride. The scene depicts a journey on a dark night, driven by the power of four horses, suggesting a sense of freedom and exhilaration that comes from the unknown. This evocative quote invites readers to envision the thrill of moving quickly through obscurity, reflecting a desire for adventure and the simplicity of joy found in the act of traveling.

This metaphor encapsulates a deeper yearning for liberation from constraints and a pursuit of personal fulfillment. It aligns with the overarching themes of the novel, where characters grapple with their desires and the conventions of society. The idea of happiness in this context suggests that it can be found in life's journeys, both literal and metaphorical, emphasizing the importance of exploration and the embrace of life's uncertainties.