The biggest professional and personal problems often stem from a lack of candor. Withholding honest feedback to "keep the peace" is a destructive act that enables bad behavior and builds personal resentment over time. Delivering the truth, even when difficult, is a gift that addresses problems head-on and prevents future failure.

While truthfulness is a cornerstone of relationships, dementia care can create ethical conflicts where protecting a loved one from distress or greater harm, like institutionalization, outweighs a rigid adherence to the truth. "Therapeutic lying" can become a necessary, though difficult, tool for compassionate caregiving.

People believe it's ethical to lie about a negative trait if the person cannot change it. In a study, 64% endorsed lying about an uncontrollable stutter, but only 19% would lie if it was due to controllable nerves. Feedback is reserved for what's changeable.

People are far more willing to lie to someone in a vulnerable state. In a study, only 3% would lie to an underperforming employee, but that number jumped to nearly 20% if the employee's father had just been hospitalized.

When a man shares a truth that upsets a woman, she often reacts with displeasure, believing her emotional response will compel him to change his reality. Instead, it teaches him that telling the truth is not worth the negative consequences, effectively training him to withhold information in the future.

Thomas Mueller-Borja views honesty as selfishly practical, as dishonesty is energetically draining. However, he places kindness higher in his value hierarchy. In situations of tension, choosing the kind path may trump absolute honesty, especially when recognizing that everyone holds their own version of the truth.

Critiques using words like 'beautiful' or 'ugly' are often perceived as moral judgments on one's identity. In contrast, using less-charged, functional words like 'boring' frames the feedback as an objective problem to be solved, making it more palatable and actionable for the recipient.

Jennifer's mother encouraged her to marry by sharing her own pre-wedding doubts but omitted that her marriage was open. This crucial half-truth gave false comfort, leading Jennifer into a marriage that ended in divorce. The incident shows how concealment by omission can be more deceptive and harmful than saying nothing at all.

When trying to deceive someone, admitting a genuine, less critical flaw can make you seem honest and self-aware. This vulnerability makes the primary lie more credible because the listener thinks, "Why would they tell me this bad thing if the other part wasn't true?"