Time For Truth by Os Guinness

In Time for Truth Os Guinness goes far beyond well-worn attacks on "political correctness." He shows how current assaults on truth - from the president down - have grave consequences for Western civilization and human freedom.
Yet Dr. Guinness also argues that truth is far from dead - not only is it alive and well, but it is undeniable and far from inconsequential.
Truth matters supremely, he says, because without truth there is no freedom. In fact, truth is freedom, and the only way to live free is to become a person of truth.