The Spanish Inquisition aimed to strengthen the Spanish church by rooting out heresy, though historians debate how effectively it fulfilled this role and how much controversy it caused. It used punishments like penance, flogging, imprisonment, and auto de fe ceremonies to target heretics like conversos and moriscos. Historians also disagree on whether it represented ruthless persecution or had a softer approach with limited resources and executions. While it was a tool of repression, the Inquisition's actual effects and level of cruelty remain open to debate.