“Whoever undertakes to set himself up as a judge of Truth and Knowledge is shipwrecked by the laughter of the gods."

[Preface to(1794)]”

Source: Summa Contra Gentiles

§ 12
On Spiritual Knowledge and Discrimination (480 AD)

2:1
Church Dogmatics (1932–1968)

The Art of Persuasion

Arnole, in Ch. 45 : not in conclusion
The Visitor (2002)
Context: Ignorance perpetuates itself just as knowledge does. Men write false documents, they preach false doctrine, and those beliefs survive to inspire wickedness in later generations.... Conversely, some men write and teach about the truth, only to be declared heretic by the wicked. In such cases evil has the advantage, for it will do anything to suppress truth, but the good man limits what he will do to suppress falsehood.
One might almost make a rule of it: "Whoever declares another heretic is himself a devil. Whoever places a relic or artifact above justice, kindness, mercy, or truth is himself a devil and the thing elevated is a work of evil magic."

Traits and Trials of Early Life (1836)

Muhammad Kulayni, Usūl al-Kāfī, vol.1, p. 23.
Religious Wisdom

"Plutarch's Lives," Vol 1, Barnes & Noble Inc., 2006, Lysander p. 646
Translation from Greek originalː "τὸ ἀληθὲς οὐ φύσει τοῦ ψεύδους κρεῖττον ἡγούμενος, ἀλλ' ἑκατέρου τῇ χρείᾳ τὴν τιμὴν ὁρίζων."