Hell is paved with good intentions.

Good motives do not excuse harmful, careless, or ineffective conduct. Usually figurative rather than a religious claim, the saying warns that intending to do well is not enough when actions produce damaging consequences.

It also criticizes promises and benevolent plans that are never carried out. Worthwhile intentions require judgment, responsibility, and practical follow-through if they are to lead to good results; the proverb may therefore imply blame despite recognizing good motives.

Use this proverb when kind aims have led to trouble, or when someone repeatedly states admirable intentions without acting on them. It is often a cautionary rebuke and may sound harsh when directed at a person facing an unintended outcome.