" If we really sought truth we would begin slowly and laboriously to divest ourselves one by one of all our coverings of fiction and delusion: or at least we would desire to do so, for mere willing cannot enable us to effect it. On the contrary, the one who can best point out our error, and help us to see it, is the adversary whom we wish to destroy. This is perhaps why we wish to destroy him. So, too, we can help him to see his error, and that is why he wants to destroy us.

In the long run, no one can show another the error that is within him, unless the other is convinced that his critic first sees and loves the good that is within him. So while we are perfectly willing to tell our adversary he is wrong, we will never be able to do so effectively until we can ourselves appreciate where he is right. And we can never accept his judgment on our errors until he gives evidence that he really appreciates our own peculiar truth. Love, love only, love of our deluded fellow man as he actually is, in his delusion and in his sin: this alone can open the door to truth. As long as we do not have this love, as long as this love is not active and effective in our lives (for words and good wishes will never suffice) we have no real access to the truth. At least not to moral truth. "

― Thomas Merton , Conjectures of a Guilty Bystander