Doubts are more cruel than the worst of truths.

The line contrasts the pain of uncertainty with the pain of knowing. Even harsh truths can be faced, processed, and acted upon; doubt, by contrast, suspends the mind in anxious speculation, inviting imagined outcomes that may be worse than reality. The saying captures a psychological insight often dramatized in literature: jealousy, suspicion, and half-knowledge corrode relationships more relentlessly than frank disclosure. As an aphorism it also implies an ethical preference for clarity—however unpleasant—over ambiguity, because certainty restores agency while doubt prolongs suffering.