In George Eliot's "Middlemarch," the quote illustrates the internal conflict faced by individuals who make promises or vows. It suggests that a person can genuinely intend to uphold their commitment while simultaneously harboring unacknowledged desires that undermine their resolve. This dichotomy indicates that while one may consciously reaffirm their intention, subconscious impulses can weaken their will and create a struggle within them.

The passage highlights the complexity of human intentions, emphasizing that the challenge of maintaining a vow lies not in a deliberate choice to break it, but in the presence of lingering temptations that lurk beneath the surface. It delves into the nuances of desire and commitment, showcasing how even the strongest intentions can falter when faced with the subtle, often unnoticed influences at play in a person's thoughts and emotions.