Loci theologici refers to a systematic method for classifying and ordering the various sources used in theological discourse. The term was famously adopted by Philipp Melanchthon to organize Protestant systems of dogmatics, reflecting the intellectual rigor of the Reformation era.
In the context of Catholic theology, the concept is primarily attributed to the theologian Melchor Cano. This framework serves as a tool for evaluating the authority and strength of different theological arguments, ensuring that doctrines are grounded in established sources. The methodology remains a relevant instrument in theological study even in contemporary times.