An imbecile habit has risen in modern controversy of saying
that some dogma was credible in the twelfth century, but is
not credible in the twentieth. You might as well say that a
certain philosophy can be believed on Mondays, but cannot
be believed on Tuesdays.
If we reject truth, why should we be surprised at the moral turbulence that follows? As C.S. Lewis said, “We laugh at honor and are shocked to find traitors in our midst. We castrate and bid the geldings be fruitful.” –Francis J. Beckwith, Gregory Koukl, Relativism: Feet Firmly Planted in Mid-Air
The interesting thing about those who espouse various kinds of relativism: they all seem to end up by saying, essentially, that truth, perception, etc. are relative, except of course the truth they are passionately trying to get us to perceive. That is, they fail to apply their own relativism to themselves.