Summa contra Gentiles
The Summa contra Gentiles ( also known as "" , "Book on the truth of the Catholic faith against the errors of the unbelievers" ) is one of the best-known treatises by St Thomas Aquinas , written as four books between 1259 and 1265 . 
<triplet> Summa contra Gentiles <subj> Thomas Aquinas <obj> author <triplet> Thomas Aquinas <subj> Summa contra Gentiles <obj> notable work