We all lie. Admittedly, most of do so only occasionally. But we still all do. Yet most of us also consider ourselves honest. In his book, The (Honest) Truth about Dishonesty, Dan Ariely offers evidence that we're able to believe we're honest even though we lie or cheat by doing so only in little ways. We're therefore able to tell ourselves we're mostly honest—that is, we're only dishonest in ways that we think don't matter. Apparently this strategy works: most of us don't suffer serious cognitive dissonance over our integrity. Thus it seems we can have the best of both worlds without too much work: we can lie or cheat in little ways that place us at an advantage, but still get to view ourselves as fundamentally honest.
But aren't there good reasons to be honest even when we don't think we need to be? Of course. Here are just three: even telling a small lie risks being unmasked as a liar, which would not only damage our reputation but also reduce the proclivity of others to trust us; further, one lie often leads to the need to tell another, more significant lie, which risks even greater negative consequences if discovered; finally, we can't necessarily predict the consequences of telling even a small lie, and if such consequences turn out to be more significantly adverse than we anticipated, our sense of responsibility and therefore guilt could cause us far more distress than we imagine.
Though many may agree these are all compelling reasons not to lie and could probably themselves come up with other excellent reasons I haven't mentioned, we still all do it. What makes lying so attractive that we all do it, even if in only minor ways, so commonly? In general, we lie to obtain the advantage of protection. We protect:
Further, when confronted with a situation in which a lie seems expedient and beneficial, the mental calculus we perform often suggests that lying—despite the theoretical risk—is almost always a safe choice. That is, most of the time we really do find ourselves getting away with it. So we continue to think of lying as a useful tool.
What's more, some—perhaps even most—might argue that in some circumstances it's actually better to lie than to tell the truth. And while I'm not certain whether I agree, I can say—and I'm confident most would concur—the only circumstances in which this might conceivably be true are those in which we lie as an attempt to prevent harm. From telling our spouse that she looks good when we think she doesn't to telling the Nazis at our doorstep that no Jews live in our house when we're hiding an entire family of them in our attic, lying out of compassion represents perhaps the only reason we would accept—even hope—for a lie, meaning the only reason we would consider lying virtuous, right, and good.
I might argue in most circumstances such as these, however, it's still better to tell the truth. It may, in fact, be better to lie to the Nazis at your door, but how often do they actually show up? And when it comes to the kind of situations most of us must deal with in the course of our daily lives, is it really better to tell your spouse she looks good when she doesn't? Or is it better make a habit of being tactfully honest so she can trust you more than anyone else to tell her the truth when she really wants and needs to hear it?
I would argue that whatever benefit we might obtain even from lying to protect someone else, that in most circumstances honesty is a better policy. If your spouse really does get upset for hearing that she doesn't look good in that dress, doesn't that suggest an underlying issue that should be examined, one in fact that you're deliberately avoiding by telling that lie?
Finally, there's a wonderful, if subtle, benefit to aiming to tell the truth in as many circumstances as we can that turns out to be the only reason that I find actually gives me pause when I'm tempted not to: a dedication to honesty motivates us to strive to become all the good things lying helps us pretend we already are. Whenever we come up against one of the reasons I mentioned above for lying (apart from trying to prevent harm), it unmasks a character defect we then have the opportunity to change. To live with the intent of avoiding any action that we'd ever feel the need to cover up leads to a remarkably stress-reduced life. This, then, is the reason that most motivates me not to lie.
Imagine developing a reputation for tactful but complete honesty upon which others know they can always rely. What an invaluable resource you'd become! People who say they want to hear the truth but are in reality more interested in being praised will quickly learn either not to ask you for your views or that the value of hearing the truth, no matter how painful, is greater than keeping their egos protected because it affords them the opportunity to reflect and self-improve. Others often have a far more accurate perspective on our character flaws than we do. If we're genuinely interested in improving ourselves or our work, what we need from them isn't flattery; it's the truth.