The History of Sex: Seville -- The Church of Me, Myself, and I -- (Chap. VI, Pt. 5)

The Holy Office of the Inquisition got its start in Seville in 1478 after King Ferdinand and Queen Isabella—the self-styled 'Catholic Monarchs'—became convinced that their newly united kingdom needed to be saved from fake converts to Christianity: namely, closet Jews and Muslims.

Conveniently, the men who convinced them were Dominicans, members of the order that had been founded by a saintly Spaniard but later racked up loads of expertise on How to Persecute Your Opponents.

The so-called 'Dogs of God' had burned the Cathars into oblivion two centuries earlier, and armed with the same how-to manuals on terror and interrogation, they resolved to do the same to heretics in Spain.

What's more, as Protestantism spread throughout Europe—with its very own 'Rome' in Geneva!—Spain's 'Modern' Inquisition increasingly served as an inspiration for the Catholic fightback known as the Counter-Reformation.

Detail from The Inquisition Tribunal by Goya

To be fair, just as Luther and Calvin had good reasons for reforming the Church, Rome's backlash wasn't just about preserving its earthly perqs.

Devout Catholics must have divined that once you start attacking the foundations of any institution, there's a danger the whole edifice will come tumbling down.

In that sense, the crisis in England was a warning of things to come, with a cretin like Henry VIII—as debauched as any Borgia—personally denouncing Luther yet setting himself up as the pope of his very own breakaway 'Protestant' church and murdering his wives because he couldn't father a healthy son.

It was even more perverse that the English should celebrate him as a jolly rogue—or at worst, a sympathetic monster—rather than a woman-killing tyrant.

And if King Harry could break away, it was just a matter of time before every Tom-and-Dick Commoner would end up worshiping at their own Churches of Me, Myself and I.

So for followers of the old faith, heresy had to be stamped out.

Like its European, Portuguese, American, and even Goan imitators, the Spanish Inquisition was so complex that historians still can't agree on body counts or how universally its diktats were applied.

At best, it seems to have tolerated transgressions so long as you didn't brag about them.

At worst, it fostered a culture of spying and informing on your neighbours, torturing and murdering innocents, and then stealing their estates to feed the killing machine.

As one man put it, 'if the Inquisitors don't burn, they don't eat.'