Laudator Temporis Acti

Thomas Carlyle (1795-1881), Past and Present, Book I, Chapter 4 (Morrison's Pill):

Will not that be a thing worthy of 'doing'; to deliver ourselves from quacks, sham-heroes; to deliver the whole world more and more from such? They are the one bane of the world. Once clear the world of them, it ceases to be a Devil's-world, in all fibres of it wretched, accursed; and begins to be a God's-world, blessed, and working hourly towards blessedness. Thou for one wilt not again vote for any quack, do honour to any edge-gilt vacuity in man's shape: cant shall be known to thee by the sound of it;—thou wilt fly from cant with a shudder never felt before; as from the opened litany of Sorcerers' Sabbaths, the true Devil-worship of this age, more horrible than any other blasphemy, profanity or genuine blackguardism elsewhere audible among men. It is alarming to witness,—in its present completed state! And Quack and Dupe, as we must ever keep in mind, are upper-side and under of the selfsame substance; convertible personages: turn up your dupe into the proper fostering element, and he himself can become a quack; there is in him the due prurient insincerity, open voracity for profit, and closed sense for truth, whereof quacks too, in all their kinds, are made.