and accepted the enslavement of captives in war, those sentenced for crimes, or children sold by their parents from necessity. Notes References Baeck, Louis, The Mediterranean tradition in economic thought, Routledge, 1994, , , google books "Companion": Nuccetelli, Susana; Schutte, Orfelia; Bueno, Otavio; A Companion to Latin American Philosophy, John Wiley and Sons, 2009, , , google books Gallardo, Alexander, Spanish Economics in the Sixteenth Century: Theory, Policy, and Practice, Universe, 2002, , , google books External links Summa de Tratos y Contratos (PDF in Spanish) 1575 deaths People from Seville Spanish economists 16th-century Spanish Roman Catholic theologians Spanish Dominicans 1525 births University of Salamanca alumni School of Salamanca