Of course, the liar often imagines that he does no harm as long as his lies go undetected. But the one lied to almost never shares this view. The moment we consider our dishonesty from the point of view of those we lie to, we recognize that we would feel betrayed if the roles were reversed.

Honesty can force any dysfunction in your life to the surface. Are you in an abusive relationship? A refusal to lie to others – How did you get that bruise? – would oblige you to come to grips with this situation very quickly. Do you have a problem with drugs or alcohol? Lying is the lifeblood of addiction. If we have no recourse to lies, our lives can unravel only so far without others noticing.Telling the truth can also reveal ways in which we want to grow but haven’t.

If someone doesn't value evidence, what evidence are you going to provide to prove that they should value it? If someone doesn’t value logic, what logical argument could you provide to show the importance of logic?

Vulnerability comes in pretending to be someone you are not.

The core of science is not a mathematical modeling--it is intellectual honesty. It is a willingness to have our certainties about the world constrained by good evidence and good argument.