Augustine, Confessions 10.23.34:
“Why does truth produce hatred, and why is your person who tells truth made an enemy to others, even though everyone loves the blessed life, which is nothing but rejoicing in truth, unless it be that truth is loved in such a way that those who love something other than truth would wish to believe that what they love is the truth, and because they wish not to be deceived, they do not wish to be convinced that they have been fooled? And so, they hate the truth on account of that thing which they love in truth’s place. They love it when it shines, they hate it when it refutes them. Because they wish not to be deceived but wish to do the deceiving, they love the truth when it reveals itself, but hate it when it reveals them. “
cur autem veritas parit odium et inimicus eis factus est homo tuus verum praedicans, cum ametur beata vita, quae non est nisi gaudium de veritate, nisi quia sic amatur veritas ut, quicumque aliud amant, hoc quod amant velint esse veritatem, et quia falli nollent, nolunt convinci quod falsi sint? itaque propter eam rem oderunt veritatem, quam pro veritate amant. amant eam lucentem, oderunt eam redarguentem. quia enim falli nolunt et fallere volunt, amant eam cum se ipsa indicat, et oderunt eam cum eos ipsos indicat.