I have long thought that book 5 of the Harry Potter series, Order of the Phoenix, is the best story of the bunch. It is the story of the pursuit of truth in the face of opposition, scoffing, and calculated attack. It is the story of what witchcraft actually, scripturally is: rebellion. Namely rebellion against Truth. Rebellion doesn't like Truth and seeks to either silence it or twist it.
Sounds a lot like the current decade...
Truth, to be Truth, must satisfy certain criteria.
Truth must be transcendent. It must come from outside ourselves. And our consciences testify to that fact.
Truth must be objective. It must be the same for all people in all places. If your truth doesn't apply to me, it's not Truth.
Truth must be unchanging. Truth must have been true in the beginning and will still be true in the end. There is no such thing as either dead Truth or new Truth.
Truth must be impervious. We can jump up and down and throw rocks at it all day long, but Truth neither has feelings nor cares about ours.