Blaise Pascal (via Al Mohler) writes:
It is as much a crime to disturb the peace when truth prevails as it is to keep the peace when truth is violated. There is therefore a time in which peace is justified and another time when it is not justifiable. For it is written that there is a time for peace and a time for war and it is the law of truth that distinguishes the two. But at no time is there a time for truth and a time for error, for it is written that God’s truth shall abide forever. That is why Christ has said that He has come to bring peace and at the same time that He has come to bring the sword. But He does not say that He has come to bring both the truth and falsehood.
Fr Vincent Miceli writes:
The idea that unity is more important than truth is a particularly pernicious myth of our times. It leads to the disastrous conclusion that schism is a greater evil than the heresies and immoralities that penetrate and thrive within the Church. A doctor who cuts out a malignancy in time saves his patient, whereas one who leaves a malignancy untreated for fear of hurting his patient condemns that patient to certain death.
G. K. Chesterton writes in Orthodoxy (via John Piper):
What we suffer from today is humility in the wrong place. Modesty has moved from the organ of ambition. Modesty has settled upon the organ of conviction; where it was never meant to be. A man was meant to be doubtful about himself, but undoubting about the truth; this has been exactly reversed. Nowadays the part of a man that a man does assert is exactly the part he ought not to assert — himself. The part he doubts is exactly the part he ought not to doubt — the Divine Reason. . . . The new skeptic is so humble that he doubts if he can even learn. . . . There is a real humility typical of our time; but it so happens that it’s practically a more poisonous humility than the wildest prostrations of the ascetic. . . . The old humility made a man doubtful about his efforts, which might make him work harder. But the new humility makes a man doubtful about his aims, which makes him stop working altogether. . . . We are on the road to producing a race of man too mentally modest to believe in the multiplication table.
Al Mohler writes:
This is our proper epistemological humility — not that it is not possible for us to know, but that the truth is not our own.
G. K. Chesterton writes (emphasis added):
Logic and truth, as a matter of fact, have very little to do with each other. Logic is concerned merely with the fidelity and accuracy with which a certain process is performed, a process which can be performed with any materials, with any assumption. You can be as logical about griffins and basilisks as about sheep and pigs. . . . The relations of logic to truth depend, then, not upon its perfection as logic, but upon certain pre-logical faculties and certain pre-logical discoveries, upon the possession of those faculties, upon the power of making those discoveries. If a man starts with certain assumptions, he may be a good logician and a good citizen, a wise man, a successful figure. If he starts with certain other assumptions, he may be an equally good logician and a bankrupt, a criminal, a raving lunatic. Logic, then, is not necessarily an instrument for finding truth; on the contrary, truth is necessarily an instrument for using logic — for using it, that is, for the discovery of further truth and for the profit of humanity. Briefly, you can only find truth with logic if you have already found truth without it.
Kurtis Smith writes, referring to postmodernism’s misplaced relativistic attack on power:
Nazism and racism aren’t horrendous because they’re violent. They’re horrendous because they’re lies.
John Piper writes on the necessary connections between friendship and truth:
Friendship hangs on believing the same gospel. The main joy of God-glorifying friendship is joy in a common vision of God.
See also Peter Kreeft’s article Comparitive Religions: The Uniqueness of Christianity.