Original: The main figures of scholasticism were Peter Abelard, Albertus Magnus, Duns Scotus, William of Ockham, Bonaventure and, above all, Thomas Aquinas, whose Summa Theologica is an ambitious synthesis of Greek philosophy and Christian doctrine.
Simplified: The main figures of scholasticism were Peter Abelard, Albertus Magnus, Duns Scotus, William of Ockham, Bonaventure and, most importantly, Thomas Aquinas. Summa Theologica is an ambitious synthesis of Greek philosophy and Christian doctrine.