Full Idea
Augustine did the most to define Christian heresy. The three most prominent were Donatism, Pelagianism (that humans are perfectible), and Manicheism (that good and evil are equally basic metaphysical realities).
Gist of Idea
Augustine identified Donatism, Pelagianism and Manicheism as the main heresies
Source
report of Augustine (works [c.415]) by Gareth B. Matthews - Augustine p.73
Book Reference
'Shorter Routledge Encyclopaedia of Philosophy', ed/tr. Craig,Edward [Routledge 2005], p.73
A Reaction
Manicheans had presumably been studying Empedocles. (I suppose it's too late to identify Christianity as a heresy?).
Related Idea
Idea 552 Empedocles said good and evil were the basic principles [Empedocles, by Aristotle]