So why, then, does truth sometimes engender hatred? Why does the servant of God come to be an enemy of those who want a happy life, even though true happiness is joy in the truth? The reason must be this: Our love of truth is such that when we love something that’s not the truth, we pretend to ourselves that we we love is the truth. Then, because we hate to be proved wrong, we’re unwilling to be convinced that we’ve deceived ourselves. In this way, then, people hate the truth for the sake of whatever it is that they love more than the truth. They love truth when it shines warmly on them, and hate it when it rebukes them.

— Augustine, Confessions, Book 10, Ch. 23, 400 AD (via)