The reputation of Cano rests on a posthumous work,
De Locis theologicis (Salamanca, 1562), unrivalled in its own line. In this, a genuine work of the
Renaissance, Cano tried to free
dogmatic theology from the vain subtleties of the schools; by clearing away the puerilities of the later scholastic theologians, to bring religion back to first principles; and, by giving rules, method, co-ordination and system, to build up a scientific treatment of theology. In discussing the credibility of sources, he was one of the first to inquire into the principles of the credibility of historical documents. He argues that if all serious
historians agree about a fact, then we should believe it, even if it is unlikely. Otherwise "It would be as if the Mediterranean peoples were to deny the existence of the ocean ... or if, indeed, we should mock at him who speaks of elephants." ==References==