Laudator Temporis Acti

David Hume (1711-1776), An Enquiry Concerning the Principles of Morals, Section I (the first paragraph):

Disputes with Persons, pertinaciously obstinate in their Principles, are, of all others, the most irksome; except, perhaps, those with Persons, who really do not believe at all the Opinion they defend, but engage in the Controversy, from Affectation, from a Spirit of Opposition, or from a Desire of showing Wit and Ingenuity, superior to the rest of Mankind. The same blind Adherence to their own Arguments is to be expected in both; the same Contempt of their Antagonists; and the same passionate Vehemence, in inforcing Sophistry and Falshood. And as reasoning is not the Source, whence either Disputant derives his Tenets; 'tis in vain to expect, that any Logic, which speaks not to the Affections, will ever engage him to embrace sounder Principles.

Id.:

Extinguish all the warm Feelings and Prepossessions in favour of Virtue, and all Disgust or Aversion against Vice: Render Men totally indifferent towards these Distinctions; and Morality is no longer a practical Study, nor has any Tendency to regulate our Lives and Actions.